9999939840

Names of 9999939840

• Cardinal: 9999939840 can be written as Nine billion, nine hundred ninety-nine million, nine hundred thirty-nine thousand, eight hundred forty.

Scientific notation

• Scientific notation: 9.99993984 × 10⁹

Factors of 9999939840

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 3963

Divisors of 9999939840

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 30 32 33 40 44 48 55 60 61 64 66 80 88 96 110 120 122 128 132 160 165 176 183 192 220 240 244 256 264 305 320 330 352 366 384 440 480 488 528 610 640 660 671 704 732 768 880 915 960 976 1056 1220 1280 1320 1342 1408 1464 1760 1830 1920 1952 2013 2112 2440 2640 2684 2816 2928 3355 3520 3660 3840 3881 3904 4026 4224 4880 5280 5368 5856 6710 7040 7320 7762 7808 8052 8448 9760 10065 10560 10736 11643 11712 13420 14080 14640 15524 15616 16104 19405 19520 20130 21120 21472 23286 23424 26840 29280 31048 32208 38810 39040 40260 42240 42691 42944 46572 46848 53680 58215 58560 62096 64416 77620 78080 80520 85382 85888 93144 107360 116430 117120 124192 128073 128832 155240 161040 170764 171776 186288 213455 214720 232860 234240 236741 248384 256146 257664 310480 322080 341528 372576 426910 429440 465720 473482 496768 512292 515328 620960 640365 644160 683056 710223 745152 853820 858880 931440 946964 993536 1024584 1183705 1241920 1280730 1288320 1366112 1420446 1490304 1707640 1862880 1893928 2049168 2367410 2483840 2561460 2576640 2604151 2732224 2840892 2980608 3415280 3551115 3725760 3787856 4098336 4734820 4967680 5122920 5208302 5464448 5681784 6830560 7102230 7451520 7575712 7812453 8196672 9469640 10245840 10416604 10928896 11363568 13020755 13661120 14204460 14903040 15151424 15624906 16393344 18939280 20491680 20833208 22727136 26041510 27322240 28408920 30302848 31249812 32786688 37878560 39062265 40983360 41666416 45454272 52083020 54644480 56817840 60605696 62499624 75757120 78124530 81966720 83332832 90908544 104166040 113635680 124999248 151514240 156249060 163933440 166665664 181817088 208332080 227271360 249998496 303028480 312498120 333331328 416664160 454542720 499996992 624996240 666662656 833328320 909085440 999993984 1249992480 1666656640 1999987968 2499984960 3333313280 4999969920 9999939840
• Sum of all divisors σ(n): 35420982912
• Sum of proper divisors (its aliquot sum) s(n): 25421043072
• 9999939840 is an abundant number, because the sum of its proper divisors (25421043072) is greater than itself. Its abundance is 15421103232

Bases of 9999939840

• Binary: 1001010100000010101111100100000000₂
• Hexadecimal: 0x2540AF900
• Base-36: 4LDPEYO

Squares and roots of 9999939840

• 9999939840 squared (9999939840²) is 99998796803619225600
• 9999939840 cubed (9999939840³) is 999981952108576550267387904000
• The square root of 9999939840 is 99999.6991995477
• The cube root of 9999939840 is 2154.4303696635

Scales and comparisons

• 9,999,939,840 seconds is equal to 317 years, 50 weeks, 2 days, 1 hour, 4 minutes.
• To count from 1 to 9,999,939,840 would take you about six hundred thirty-five 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 9999939840 cubic inches would be around 179.5 feet tall.

Recreational maths with 9999939840

• 9999939840 backwards is 0489399999
• The number of decimal digits it has is: 10
• The sum of 9999939840's digits is 69
• More coming soon!