990000000000

Names of 990000000000

• Cardinal: 990000000000 can be written as Nine hundred ninety billion.

Scientific notation

• Scientific notation: 9.9 × 10¹¹

Factors of 990000000000

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 23
• Sum of prime factors: 21

Divisors of 990000000000

• Number of divisors d(n): 726
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 25 30 32 33 36 40 44 45 48 50 55 60 64 66 72 75 80 88 90 96 99 100 110 120 125 128 132 144 150 160 165 176 180 192 198 200 220 225 240 250 256 264 275 288 300 320 330 352 360 375 384 396 400 440 450 480 495 500 512 528 550 576 600 625 640 660 704 720 750 768 792 800 825 880 900 960 990 1000 1024 1056 1100 1125 1152 1200 1250 1280 1320 1375 1408 1440 1500 1536 1584 1600 1650 1760 1800 1875 1920 1980 2000 2112 2200 2250 2304 2400 2475 2500 2560 2640 2750 2816 2880 3000 3072 3125 3168 3200 3300 3520 3600 3750 3840 3960 4000 4125 4224 4400 4500 4608 4800 4950 5000 5120 5280 5500 5625 5632 5760 6000 6250 6336 6400 6600 6875 7040 7200 7500 7680 7920 8000 8250 8448 8800 9000 9216 9375 9600 9900 10000 10560 11000 11250 11264 11520 12000 12375 12500 12672 12800 13200 13750 14080 14400 15000 15360 15625 15840 16000 16500 16896 17600 18000 18750 19200 19800 20000 20625 21120 22000 22500 23040 24000 24750 25000 25344 25600 26400 27500 28125 28160 28800 30000 31250 31680 32000 33000 33792 34375 35200 36000 37500 38400 39600 40000 41250 42240 44000 45000 46080 46875 48000 49500 50000 50688 52800 55000 56250 56320 57600 60000 61875 62500 63360 64000 66000 68750 70400 72000 75000 76800 78125 79200 80000 82500 84480 88000 90000 93750 96000 99000 100000 101376 103125 105600 110000 112500 115200 120000 123750 125000 126720 128000 132000 137500 140625 140800 144000 150000 156250 158400 160000 165000 168960 171875 176000 180000 187500 192000 198000 200000 206250 211200 220000 225000 230400 234375 240000 247500 250000 253440 264000 275000 281250 281600 288000 300000 309375 312500 316800 320000 330000 343750 352000 360000 375000 384000 390625 396000 400000 412500 422400 440000 450000 468750 480000 495000 500000 506880 515625 528000 550000 562500 576000 600000 618750 625000 633600 640000 660000 687500 703125 704000 720000 750000 781250 792000 800000 825000 844800 859375 880000 900000 937500 960000 990000 1000000 1031250 1056000 1100000 1125000 1152000 1171875 1200000 1237500 1250000 1267200 1320000 1375000 1406250 1408000 1440000 1500000 1546875 1562500 1584000 1600000 1650000 1718750 1760000 1800000 1875000 1920000 1953125 1980000 2000000 2062500 2112000 2200000 2250000 2343750 2400000 2475000 2500000 2534400 2578125 2640000 2750000 2812500 2880000 3000000 3093750 3125000 3168000 3200000 3300000 3437500 3515625 3520000 3600000 3750000 3906250 3960000 4000000 4125000 4224000 4296875 4400000 4500000 4687500 4800000 4950000 5000000 5156250 5280000 5500000 5625000 5760000 5859375 6000000 6187500 6250000 6336000 6600000 6875000 7031250 7040000 7200000 7500000 7734375 7812500 7920000 8000000 8250000 8593750 8800000 9000000 9375000 9600000 9765625 9900000 10000000 10312500 10560000 11000000 11250000 11718750 12000000 12375000 12500000 12672000 12890625 13200000 13750000 14062500 14400000 15000000 15468750 15625000 15840000 16000000 16500000 17187500 17578125 17600000 18000000 18750000 19531250 19800000 20000000 20625000 21120000 21484375 22000000 22500000 23437500 24000000 24750000 25000000 25781250 26400000 27500000 28125000 28800000 29296875 30000000 30937500 31250000 31680000 33000000 34375000 35156250 35200000 36000000 37500000 38671875 39062500 39600000 40000000 41250000 42968750 44000000 45000000 46875000 48000000 49500000 50000000 51562500 52800000 55000000 56250000 58593750 60000000 61875000 62500000 63360000 64453125 66000000 68750000 70312500 72000000 75000000 77343750 78125000 79200000 80000000 82500000 85937500 87890625 88000000 90000000 93750000 99000000 100000000 103125000 105600000 107421875 110000000 112500000 117187500 120000000 123750000 125000000 128906250 132000000 137500000 140625000 144000000 150000000 154687500 156250000 158400000 165000000 171875000 175781250 176000000 180000000 187500000 193359375 198000000 200000000 206250000 214843750 220000000 225000000 234375000 240000000 247500000 250000000 257812500 264000000 275000000 281250000 300000000 309375000 312500000 316800000 322265625 330000000 343750000 351562500 360000000 375000000 386718750 396000000 400000000 412500000 429687500 440000000 450000000 468750000 495000000 500000000 515625000 528000000 550000000 562500000 600000000 618750000 625000000 644531250 660000000 687500000 703125000 720000000 750000000 773437500 792000000 825000000 859375000 880000000 900000000 937500000 966796875 990000000 1000000000 1031250000 1100000000 1125000000 1200000000 1237500000 1250000000 1289062500 1320000000 1375000000 1406250000 1500000000 1546875000 1584000000 1650000000 1718750000 1800000000 1875000000 1933593750 1980000000 2000000000 2062500000 2200000000 2250000000 2475000000 2500000000 2578125000 2640000000 2750000000 2812500000 3000000000 3093750000 3300000000 3437500000 3600000000 3750000000 3867187500 3960000000 4125000000 4400000000 4500000000 4950000000 5000000000 5156250000 5500000000 5625000000 6000000000 6187500000 6600000000 6875000000 7500000000 7734375000 7920000000 8250000000 9000000000 9900000000 10000000000 10312500000 11000000000 11250000000 12375000000 13200000000 13750000000 15000000000 15468750000 16500000000 18000000000 19800000000 20625000000 22000000000 22500000000 24750000000 27500000000 30000000000 30937500000 33000000000 39600000000 41250000000 45000000000 49500000000 55000000000 61875000000 66000000000 82500000000 90000000000 99000000000 110000000000 123750000000 165000000000 198000000000 247500000000 330000000000 495000000000 990000000000
• Sum of all divisors σ(n): 3898095623292
• Sum of proper divisors (its aliquot sum) s(n): 2908095623292
• 990000000000 is an abundant number, because the sum of its proper divisors (2908095623292) is greater than itself. Its abundance is 1918095623292

Bases of 990000000000

• Binary: 1110011010000000100110010010110000000000₂
• Hexadecimal: 0xE680992C00
• Base-36: CMSSFSW0

Squares and roots of 990000000000

• 990000000000 squared (990000000000²) is 980100000000000000000000
• 990000000000 cubed (990000000000³) is 970299000000000000000000000000000000
• The square root of 990000000000 is 994987.4371066199
• The cube root of 990000000000 is 9966.5549341261

Scales and comparisons

• 990,000,000,000 seconds is equal to 31,478 years, 48 weeks, 5 days, 8 hours.
• To count from 1 to 990,000,000,000 would take you about sixty-two thousand, nine hundred fifty-seven years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 990000000000 cubic inches would be around 830.5 feet tall.

Recreational maths with 990000000000

• 990000000000 backwards is 000000000099
• 990000000000 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 990000000000's digits is 18
• More coming soon!