400038699921

Names of 400038699921

• Cardinal: 400038699921 can be written as Four hundred billion, thirty-eight million, six hundred ninety-nine thousand, nine hundred twenty-one.

Scientific notation

• Scientific notation: 4.00038699921 × 10¹¹

Factors of 400038699921

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1397

Divisors of 400038699921

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 7 21 31 93 127 217 381 651 889 961 1229 2667 2883 3687 3937 6727 8603 11811 16129 20181 25809 27559 38099 48387 82677 112903 114297 122047 156083 266693 338709 366141 468249 499999 800079 854329 1092581 1181069 1499997 2562987 3277743 3499993 3543207 4838573 8267483 10499979 14515719 15499969 19822541 24802449 33870011 46499907 59467623 101610033 108499783 138757787 149995763 325499349 416273361 449987289 614498771 1049970341 1843496313 3149911023 4301491397 12904474191 19049461901 57148385703 133346233307 400038699921
• Sum of all divisors σ(n): 635396391360
• Sum of proper divisors (its aliquot sum) s(n): 235357691439
• 400038699921 is a deficient number, because the sum of its proper divisors (235357691439) is less than itself. Its deficiency is 164681008482

Bases of 400038699921

• Binary: 101110100100100001010100010001110010001₂
• Hexadecimal: 0x5D242A2391
• Base-36: 53RWPOCX

Squares and roots of 400038699921

• 400038699921 squared (400038699921²) is 160030961434483885406241
• 400038699921 cubed (400038699921³) is 64018577759358622735537394579606961
• The square root of 400038699921 is 632486.1262676043
• The cube root of 400038699921 is 7368.3006091645

Scales and comparisons

• 400,038,699,921 seconds is equal to 12,719 years, 51 weeks, 4 days, 13 hours, 5 minutes, 21 seconds.
• To count from 1 to 400,038,699,921 would take you about twenty-five thousand, four hundred thirty-nine 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 400038699921 cubic inches would be around 614 feet tall.

Recreational maths with 400038699921

• 400038699921 backwards is 129996830004
• The number of decimal digits it has is: 12
• The sum of 400038699921's digits is 51
• More coming soon!