990121667

Names of 990121667

• Cardinal: 990121667 can be written as Nine hundred ninety million, one hundred twenty-one thousand, six hundred sixty-seven.

Scientific notation

• Scientific notation: 9.90121667 × 10⁸

Factors of 990121667

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 18957

Divisors of 990121667

• Number of divisors d(n): 8
• Complete list of divisors:
  1 17 3863 15077 65671 256309 58242451 990121667
• Sum of all divisors σ(n): 1048705056
• Sum of proper divisors (its aliquot sum) s(n): 58583389
• 990121667 is a deficient number, because the sum of its proper divisors (58583389) is less than itself. Its deficiency is 931538278

Bases of 990121667

• Binary: 111011000001000000111011000011₂
• Hexadecimal: 0x3B040EC3
• Base-36: GDHQRN

Squares and roots of 990121667

• 990121667 squared (990121667²) is 980340915462858889
• 990121667 cubed (990121667³) is 970656781446391919762447963
• The square root of 990121667 is 31466.1988012533
• The cube root of 990121667 is 996.6963200513

Scales and comparisons

• 990,121,667 seconds is equal to 31 years, 25 weeks, 17 hours, 47 minutes, 47 seconds.
• To count from 1 to 990,121,667 would take you about forty-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 990121667 cubic inches would be around 83.1 feet tall.

Recreational maths with 990121667

• 990121667 backwards is 766121099
• The number of decimal digits it has is: 9
• The sum of 990121667's digits is 41
• More coming soon!