9998402990821

Names of 9998402990821

• Cardinal: 9998402990821 can be written as Nine trillion, nine hundred ninety-eight billion, four hundred two million, nine hundred ninety thousand, eight hundred twenty-one.

Scientific notation

• Scientific notation: 9.998402990821 × 10¹²

Factors of 9998402990821

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 164

Divisors of 9998402990821

• Number of divisors d(n): 96
• Complete list of divisors:
  1 7 19 41 49 97 133 287 343 679 779 931 1681 1843 2009 3977 4753 5453 6517 9409 11767 12901 14063 27839 31939 33271 38171 65863 75563 82369 90307 163057 178771 194873 223573 267197 385769 461041 528941 576583 632149 912673 1141399 1251397 1364111 1565011 2700383 3098083 3227287 3702587 6388711 7329611 7989793 8759779 10955077 15816529 17340787 18902681 21686581 25918109 37419593 44720977 51307277 55928551 61318453 110715703 121385509 132318767 151806067 261937151 300514051 313046839 359150939 710972267 775009921 849698563 1062642469 1534203313 1833560057 2103598357 2514056573 4976805869 5425069447 5947889941 10739423191 12834920399 14725188499 29149862947 34837641083 75175962337 103076319493 204049040629 243863487581 526231736359 1428343284403 9998402990821
• Sum of all divisors σ(n): 12711329120000
• Sum of proper divisors (its aliquot sum) s(n): 2712926129179
• 9998402990821 is a deficient number, because the sum of its proper divisors (2712926129179) is less than itself. Its deficiency is 7285476861642

Bases of 9998402990821

• Binary: 10010001011111101111010000100011001011100101₂
• Hexadecimal: 0x917EF4232E5
• Base-36: 3JL7AZMJP

Squares and roots of 9998402990821

• 9998402990821 squared (9998402990821²) is 99968062366858317810254041
• 9998402990821 cubed (9998402990821³) is 999520973755376460903604935116201157661
• The square root of 9998402990821 is 3162025.1407635899
• The cube root of 9998402990821 is 21543.1999552687

Scales and comparisons

• 9,998,402,990,821 seconds is equal to 317,918 years, 14 weeks, 6 days, 20 hours, 7 minutes, 1 second.
• To count from 1 to 9,998,402,990,821 would take you about seven hundred ninety-four thousand, seven hundred ninety-five 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 9998402990821 cubic inches would be around 1795.3 feet tall.

Recreational maths with 9998402990821

• 9998402990821 backwards is 1280992048999
• The number of decimal digits it has is: 13
• The sum of 9998402990821's digits is 70
• More coming soon!