9008990991

Names of 9008990991

• Cardinal: 9008990991 can be written as Nine billion, eight million, nine hundred ninety thousand, nine hundred ninety-one.

Scientific notation

• Scientific notation: 9.008990991 × 10⁹

Factors of 9008990991

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 71

Divisors of 9008990991

• Number of divisors d(n): 324
• Complete list of divisors:
  1 3 7 9 11 13 21 27 33 37 39 49 63 77 81 91 99 111 117 121 143 147 169 189 231 243 259 273 297 333 351 363 407 429 441 481 507 539 567 637 693 777 819 847 891 999 1001 1053 1089 1183 1221 1287 1323 1443 1521 1573 1617 1701 1813 1859 1911 2079 2331 2457 2541 2673 2849 2997 3003 3159 3267 3367 3549 3663 3861 3969 4329 4477 4563 4719 4851 5291 5439 5577 5733 5929 6237 6253 6993 7007 7371 7623 8281 8547 8991 9009 9801 10101 10647 10989 11011 11583 11907 12987 13013 13431 13689 14157 14553 15873 16317 16731 17199 17787 18711 18759 19943 20449 20979 21021 22113 22869 23569 24843 25641 27027 29403 30303 31339 31941 32967 33033 34749 37037 38961 39039 40293 41067 42471 43659 43771 47619 48951 50193 51597 53361 56277 58201 59829 61347 62937 63063 68607 68783 70707 74529 76923 77077 81081 90909 91091 94017 95823 98901 99099 111111 116883 117117 120879 127413 130977 131313 142857 143143 146853 150579 154791 160083 168831 174603 179487 184041 189189 205821 206349 212121 219373 223587 230769 231231 243243 259259 272727 273273 282051 287469 297297 306397 333333 351351 362637 382239 393939 407407 428571 429429 440559 451737 480249 481481 506493 523809 538461 552123 567567 619047 636363 658119 670761 692307 693693 756613 777777 818181 819819 846153 891891 919191 999999 1002001 1054053 1087911 1181817 1222221 1285713 1288287 1440747 1444443 1519479 1571427 1615383 1656369 1702701 1857141 1909089 1974357 2012283 2081079 2269839 2333331 2459457 2538459 2675673 2757573 2851849 2999997 3006003 3162159 3370367 3545451 3666663 3864861 4333329 4714281 4846149 4969107 5296291 5571423 5727267 5923071 6243237 6809517 6999993 7378371 7615377 8272719 8555547 8999991 9018009 10111101 10636353 10999989 11594583 12999987 14142843 15888873 16714269 17769213 18729711 20428551 20999979 22135113 24818157 25666641 27054027 30333303 32999967 34783749 37074037 38999961 47666619 53307639 61285653 62999937 74454471 76999923 81162081 90999909 98999901 111222111 116999883 142999857 183856959 230999769 243486243 272999727 333666333 428999571 692999307 818999181 1000998999 1286998713 3002996997 9008990991
• Sum of all divisors σ(n): 19189451736
• Sum of proper divisors (its aliquot sum) s(n): 10180460745
• 9008990991 is an abundant number, because the sum of its proper divisors (10180460745) is greater than itself. Its abundance is 1171469754

Bases of 9008990991

• Binary: 1000011000111110100100101100001111₂
• Hexadecimal: 0x218FA4B0F
• Base-36: 44ZPXXR

Squares and roots of 9008990991

• 9008990991 squared (9008990991²) is 81161918675919162081
• 9008990991 cubed (9008990991³) is 731186994163630379831997812271
• The square root of 9008990991 is 94915.7046594503
• The cube root of 9008990991 is 2080.7762597415

Scales and comparisons

• 9,008,990,991 seconds is equal to 286 years, 23 weeks, 5 days, 17 hours, 29 minutes, 51 seconds.
• To count from 1 to 9,008,990,991 would take you about five hundred seventy-two 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 9008990991 cubic inches would be around 173.4 feet tall.

Recreational maths with 9008990991

• 9008990991 backwards is 1990998009
• The number of decimal digits it has is: 10
• The sum of 9008990991's digits is 54
• More coming soon!