3991897892720871

Names of 3991897892720871

• Cardinal: 3991897892720871 can be written as Three quadrillion, nine hundred ninety-one trillion, eight hundred ninety-seven billion, eight hundred ninety-two million, seven hundred twenty thousand, eight hundred seventy-one.

Scientific notation

• Scientific notation: 3.991897892720871 × 10¹⁵

Factors of 3991897892720871

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 91803354

Divisors of 3991897892720871

• Number of divisors d(n): 60
• Complete list of divisors:
  1 3 7 9 21 27 49 63 81 147 189 441 567 1323 3969 10957 32871 76699 98613 230097 295839 536893 690291 887517 1610679 2070873 4832037 6212619 14496111 43488333 91792387 275377161 642546709 826131483 1927640127 2478394449 4497826963 5782920381 7435183347 13493480889 17348761143 40480442667 52046283429 121441328001 364323984003 1005769184359 3017307553077 7040384290513 9051922659231 21121152871539 27155767977693 49282690033591 63363458614617 81467303933079 147848070100773 190090375843851 443544210302319 570271127531553 1330632630906957 3991897892720871
• Sum of all divisors σ(n): 6937423232194488
• Sum of proper divisors (its aliquot sum) s(n): 2945525339473617
• 3991897892720871 is a deficient number, because the sum of its proper divisors (2945525339473617) is less than itself. Its deficiency is 1046372553247254

Bases of 3991897892720871

• Binary: 1110001011101001110000100111111000000001000011100111₂
• Hexadecimal: 0xE2E9C27E010E7
• Base-36: 13B0CKPKRFR

Squares and roots of 3991897892720871

• 3991897892720871 squared (3991897892720871²) is 15935248785909330515127518998641
• 3991897892720871 cubed (3991897892720871³) is 63611886048454274514016062199635448512841336311
• The square root of 3991897892720871 is 63181467.9531970909
• The cube root of 3991897892720871 is 158632.8553048649

Scales and comparisons

• 3,991,897,892,720,871 seconds is equal to 126,930,005 years, 12 weeks, 2 days, 11 hours, 47 minutes, 51 seconds.
• To count from 1 to 3,991,897,892,720,871 would take you about three hundred eighty million, seven hundred ninety thousand and fifteen 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 3991897892720871 cubic inches would be around 13219.4 feet tall.

Recreational maths with 3991897892720871

• 3991897892720871 backwards is 1780272987981993
• The number of decimal digits it has is: 16
• The sum of 3991897892720871's digits is 90
• More coming soon!