399728472561

Names of 399728472561

• Cardinal: 399728472561 can be written as Three hundred ninety-nine billion, seven hundred twenty-eight million, four hundred seventy-two thousand, five hundred sixty-one.

Scientific notation

• Scientific notation: 3.99728472561 × 10¹¹

Factors of 399728472561

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 27669

Divisors of 399728472561

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 9 11 23 27 33 69 99 207 253 297 621 759 2277 2311 6831 6933 20799 25321 25421 53153 62397 75963 76263 159459 227889 228789 278531 478377 582383 584683 683667 686367 835593 1435131 1747149 1754049 2506779 5241447 5262147 6406213 7520337 15724341 15786441 19218639 57655917 58516831 172967751 175550493 526651479 643685141 1345887113 1579954437 1931055423 4037661339 5793166269 12112984017 14804758243 17379498807 36338952051 44414274729 133242824187 399728472561
• Sum of all divisors σ(n): 674432225280
• Sum of proper divisors (its aliquot sum) s(n): 274703752719
• 399728472561 is a deficient number, because the sum of its proper divisors (274703752719) is less than itself. Its deficiency is 125024719842

Bases of 399728472561

• Binary: 101110100010001101011000111000111110001₂
• Hexadecimal: 0x5D11AC71F1
• Base-36: 53MS0FE9

Squares and roots of 399728472561

• 399728472561 squared (399728472561²) is 159782851775950129898721
• 399728472561 cubed (399728472561³) is 63869755281841211618925282957494481
• The square root of 399728472561 is 632240.8343036693
• The cube root of 399728472561 is 7366.3954271679

Scales and comparisons

• 399,728,472,561 seconds is equal to 12,710 years, 6 weeks, 4 days, 22 hours, 49 minutes, 21 seconds.
• To count from 1 to 399,728,472,561 would take you about twenty-five thousand, four hundred twenty 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 399728472561 cubic inches would be around 613.9 feet tall.

Recreational maths with 399728472561

• 399728472561 backwards is 165274827993
• The number of decimal digits it has is: 12
• The sum of 399728472561's digits is 63
• More coming soon!