389640617085

Names of 389640617085

• Cardinal: 389640617085 can be written as Three hundred eighty-nine billion, six hundred forty million, six hundred seventeen thousand and eighty-five.

Scientific notation

• Scientific notation: 3.89640617085 × 10¹¹

Factors of 389640617085

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 217098

Divisors of 389640617085

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 5 15 23 41 69 115 123 127 205 345 381 615 635 943 1905 2829 2921 4715 5207 8763 14145 14605 15621 26035 43815 78105 119761 216899 359283 598805 650697 1084495 1796415 3253485 4988677 8892859 14966031 24943385 26678577 27546173 44464295 74830155 82638519 133392885 137730865 204535757 413192595 613607271 633561979 1022678785 1129393093 1900685937 3068036355 3167809895 3388179279 5646965465 9503429685 16940896395 25976041139 77928123417 129880205695 389640617085
• Sum of all divisors σ(n): 671647334400
• Sum of proper divisors (its aliquot sum) s(n): 282006717315
• 389640617085 is a deficient number, because the sum of its proper divisors (282006717315) is less than itself. Its deficiency is 107633899770

Bases of 389640617085

• Binary: 101101010111000011000111111110001111101₂
• Hexadecimal: 0x5AB863FC7D
• Base-36: 4YZXYOAL

Squares and roots of 389640617085

• 389640617085 squared (389640617085²) is 151819810482379593897225
• 389640617085 cubed (389640617085³) is 59155164642082136485326449069089125
• The square root of 389640617085 is 624211.9969089027
• The cube root of 389640617085 is 7303.8986936251

Scales and comparisons

• 389,640,617,085 seconds is equal to 12,389 years, 19 weeks, 8 hours, 44 minutes, 45 seconds.
• To count from 1 to 389,640,617,085 would take you about twenty-four thousand, seven hundred seventy-eight 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 389640617085 cubic inches would be around 608.7 feet tall.

Recreational maths with 389640617085

• 389640617085 backwards is 580716046983
• The number of decimal digits it has is: 12
• The sum of 389640617085's digits is 57
• More coming soon!