399020161

Names of 399020161

• Cardinal: 399020161 can be written as Three hundred ninety-nine million, twenty thousand, one hundred sixty-one.

Scientific notation

• Scientific notation: 3.99020161 × 10⁸

Factors of 399020161

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 399020161

Divisors of 399020161

• Number of divisors d(n): 2
• Complete list of divisors:
  1 399020161
• Sum of all divisors σ(n): 399020162
• Sum of proper divisors (its aliquot sum) s(n): 1
• 399020161 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 399020160

Bases of 399020161

• Binary: 10111110010001001000010000001₂
• Hexadecimal: 0x17C89081
• Base-36: 6LKDXD

Squares and roots of 399020161

• 399020161 squared (399020161²) is 159217088884465921
• 399020161 cubed (399020161³) is 63530828440630902196433281
• The square root of 399020161 is 19975.4890052783
• The cube root of 399020161 is 736.2041815211

Scales and comparisons

• 399,020,161 seconds is equal to 12 years, 35 weeks, 5 days, 6 hours, 56 minutes, 1 second.
• To count from 1 to 399,020,161 would take you about nineteen 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 399020161 cubic inches would be around 61.4 feet tall.

Recreational maths with 399020161

• 399020161 backwards is 161020993
• The number of decimal digits it has is: 9
• The sum of 399020161's digits is 31
• More coming soon!