399993981939

Names of 399993981939

• Cardinal: 399993981939 can be written as Three hundred ninety-nine billion, nine hundred ninety-three million, nine hundred eighty-one thousand, nine hundred thirty-nine.

Scientific notation

• Scientific notation: 3.99993981939 × 10¹¹

Factors of 399993981939

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 120

Divisors of 399993981939

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 9 23 41 53 69 123 159 207 369 477 529 943 1219 1587 1681 2173 2829 3657 4761 5043 6519 8487 10971 12167 15129 19557 21689 28037 36501 38663 49979 65067 68921 84111 89093 109503 115989 149937 195201 206763 252333 267279 347967 449811 498847 620289 644851 801837 889249 1149517 1496541 1585183 1934553 2049139 2667747 3448551 3652813 4489623 4755549 5803659 6147417 8003241 10345653 10958439 14266647 18442251 20452727 26438891 32875317 36459209 47130197 61358181 79316673 84014699 109377627 141390591 184074543 237950019 252044097 328132881 424171773 756132291 838561807 1083994531 1932338077 2515685421 3251983593 5797014231 7547056263 9755950779 17391042693 44443775771 133331327313 399993981939
• Sum of all divisors σ(n): 630811359360
• Sum of proper divisors (its aliquot sum) s(n): 230817377421
• 399993981939 is a deficient number, because the sum of its proper divisors (230817377421) is less than itself. Its deficiency is 169176604518

Bases of 399993981939

• Binary: 101110100100001011111111100101111110011₂
• Hexadecimal: 0x5D217FCBF3
• Base-36: 53R637QR

Squares and roots of 399993981939

• 399993981939 squared (399993981939²) is 159995185587417058199721
• 399993981939 cubed (399993981939³) is 63997111374180251883199713528839019
• The square root of 399993981939 is 632450.7743208163
• The cube root of 399993981939 is 7368.0260458849

Scales and comparisons

• 399,993,981,939 seconds is equal to 12,718 years, 29 weeks, 4 days, 23 hours, 25 minutes, 39 seconds.
• To count from 1 to 399,993,981,939 would take you about twenty-five thousand, four hundred thirty-seven 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 399993981939 cubic inches would be around 614 feet tall.

Recreational maths with 399993981939

• 399993981939 backwards is 939189399993
• The number of decimal digits it has is: 12
• The sum of 399993981939's digits is 81
• More coming soon!