3999921408

Names of 3999921408

• Cardinal: 3999921408 can be written as Three billion, nine hundred ninety-nine million, nine hundred twenty-one thousand, four hundred eight.

Scientific notation

• Scientific notation: 3.999921408 × 10⁹

Factors of 3999921408

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 6752

Divisors of 3999921408

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 37 42 48 56 63 64 72 74 84 96 111 112 126 128 144 148 168 192 222 224 252 256 259 288 296 333 336 384 444 448 504 518 576 592 666 672 768 777 888 896 1008 1036 1152 1184 1332 1344 1554 1776 1792 2016 2072 2304 2331 2368 2664 2688 3108 3552 4032 4144 4662 4736 5328 5376 6216 6703 7104 8064 8288 9324 9472 10656 12432 13406 14208 16128 16576 18648 20109 21312 24864 26812 28416 33152 37296 40218 42624 46921 49728 53624 60327 66304 74592 80436 85248 93842 99456 107248 120654 140763 149184 160872 187684 198912 214496 241308 248011 281526 298368 321744 375368 422289 428992 482616 496022 563052 596736 643488 744033 750736 844578 857984 965232 992044 1126104 1286976 1488066 1501472 1689156 1715968 1736077 1930464 1984088 2232099 2252208 2573952 2976132 3002944 3378312 3472154 3860928 3968176 4464198 4504416 5147904 5208231 5952264 6005888 6756624 6944308 7721856 7936352 8928396 9008832 10416462 11904528 12011776 13513248 13888616 15443712 15624693 15872704 17856792 18017664 20832924 23809056 27026496 27777232 31249386 31745408 35713584 36035328 41665848 47618112 54052992 55554464 62498772 63490816 71427168 83331696 95236224 108105984 111108928 124997544 142854336 166663392 190472448 222217856 249995088 285708672 333326784 444435712 499990176 571417344 666653568 999980352 1333307136 1999960704 3999921408
• Sum of all divisors σ(n): 13538540288
• Sum of proper divisors (its aliquot sum) s(n): 9538618880
• 3999921408 is an abundant number, because the sum of its proper divisors (9538618880) is greater than itself. Its abundance is 5538697472

Bases of 3999921408

• Binary: 11101110011010011111010100000000₂
• Hexadecimal: 0xEE69F500
• Base-36: 1U5G740

Squares and roots of 3999921408

• 3999921408 squared (3999921408²) is 15999371270176702464
• 3999921408 cubed (3999921408³) is 63996227658119944128599949312
• The square root of 3999921408 is 63244.9318760009
• The cube root of 3999921408 is 1587.3906554815

Scales and comparisons

• 3,999,921,408 seconds is equal to 127 years, 9 weeks, 4 days, 9 hours, 16 minutes, 48 seconds.
• To count from 1 to 3,999,921,408 would take you about two hundred fifty-four 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 3999921408 cubic inches would be around 132.3 feet tall.

Recreational maths with 3999921408

• 3999921408 backwards is 8041299993
• The number of decimal digits it has is: 10
• The sum of 3999921408's digits is 54
• More coming soon!