139987

Names of 139987

• Cardinal: 139987 can be written as One hundred thirty-nine thousand, nine hundred eighty-seven.

Scientific notation

• Scientific notation: 1.39987 × 10⁵

Factors of 139987

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 139987

Divisors of 139987

• Number of divisors d(n): 2
• Complete list of divisors:
  1 139987
• Sum of all divisors σ(n): 139988
• Sum of proper divisors (its aliquot sum) s(n): 1
• 139987 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 139986

Bases of 139987

• Binary: 100010001011010011₂
• Hexadecimal: 0x222D3
• Base-36: 300J

Squares and roots of 139987

• 139987 squared (139987²) is 19596360169
• 139987 cubed (139987³) is 2743235670977803
• The square root of 139987 is 374.1483662933
• The cube root of 139987 is 51.9233337683

Scales and comparisons

• 139,987 seconds is equal to 1 day, 14 hours, 53 minutes, 7 seconds.
• To count from 1 to 139,987 would take you about fourteen hours.

  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 139987 cubic inches would be around 4.3 feet tall.

Recreational maths with 139987

• 139987 backwards is 789931
• The number of decimal digits it has is: 6
• The sum of 139987's digits is 37
• More coming soon!