9000397821

Names of 9000397821

• Cardinal: 9000397821 can be written as Nine billion, three hundred ninety-seven thousand, eight hundred twenty-one.

Scientific notation

• Scientific notation: 9.000397821 × 10⁹

Factors of 9000397821

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 340595

Divisors of 9000397821

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 9049 27147 331543 994629 3000132607 9000397821
• Sum of all divisors σ(n): 12001892800
• Sum of proper divisors (its aliquot sum) s(n): 3001494979
• 9000397821 is a deficient number, because the sum of its proper divisors (3001494979) is less than itself. Its deficiency is 5998902842

Bases of 9000397821

• Binary: 1000011000011101110010101111111101₂
• Hexadecimal: 0x218772BFD
• Base-36: 44ULREL

Squares and roots of 9000397821

• 9000397821 squared (9000397821²) is 81007160936261548041
• 9000397821 cubed (9000397821³) is 729096674776124756874303218661
• The square root of 9000397821 is 94870.4264826505
• The cube root of 9000397821 is 2080.1144707865

Scales and comparisons

• 9,000,397,821 seconds is equal to 286 years, 9 weeks, 4 days, 6 hours, 30 minutes, 21 seconds.
• To count from 1 to 9,000,397,821 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 9000397821 cubic inches would be around 173.3 feet tall.

Recreational maths with 9000397821

• 9000397821 backwards is 1287930009
• The number of decimal digits it has is: 10
• The sum of 9000397821's digits is 39
• More coming soon!