400991917953

Names of 400991917953

• Cardinal: 400991917953 can be written as Four hundred billion, nine hundred ninety-one million, nine hundred seventeen thousand, nine hundred fifty-three.

Scientific notation

• Scientific notation: 4.00991917953 × 10¹¹

Factors of 400991917953

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 8373

Divisors of 400991917953

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 11 19 33 57 121 209 363 627 691 1331 2073 2299 3993 6897 7601 7649 13129 22803 22947 25289 39387 75867 83611 84139 144419 145331 250833 252417 433257 435993 919721 925529 1588609 1598641 2759163 2776587 4765827 4795923 5285459 10180819 15856377 17474699 17585051 30542457 52424097 52755153 58140049 100423721 174420147 193435561 301271163 580306683 639540539 1104660931 1918621617 3313982793 7034945929 12151270241 21104837787 36453810723 133663972651 400991917953
• Sum of all divisors σ(n): 620009856000
• Sum of proper divisors (its aliquot sum) s(n): 219017938047
• 400991917953 is a deficient number, because the sum of its proper divisors (219017938047) is less than itself. Its deficiency is 181973979906

Bases of 400991917953

• Binary: 101110101011100111110110001011110000001₂
• Hexadecimal: 0x5D5CFB1781
• Base-36: 547O8G3L

Squares and roots of 400991917953

• 400991917953 squared (400991917953²) is 160794518263625483710209
• 400991917953 cubed (400991917953³) is 64477302274859869988244065356482177
• The square root of 400991917953 is 633239.2264800089
• The cube root of 400991917953 is 7374.1483981721

Scales and comparisons

• 400,991,917,953 seconds is equal to 12,750 years, 15 weeks, 5 days, 3 hours, 52 minutes, 33 seconds.
• To count from 1 to 400,991,917,953 would take you about twenty-five thousand, five hundred 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 400991917953 cubic inches would be around 614.5 feet tall.

Recreational maths with 400991917953

• 400991917953 backwards is 359719199004
• 400991917953 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 400991917953's digits is 57
• More coming soon!