39989

Names of 39989

• Cardinal: 39989 can be written as Thirty-nine thousand, nine hundred eighty-nine.

Scientific notation

• Scientific notation: 3.9989 × 10⁴

Factors of 39989

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 39989

Divisors of 39989

• Number of divisors d(n): 2
• Complete list of divisors:
  1 39989
• Sum of all divisors σ(n): 39990
• Sum of proper divisors (its aliquot sum) s(n): 1
• 39989 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 39988

Bases of 39989

• Binary: 1001110000110101₂
• Hexadecimal: 0x9C35
• Base-36: UUT

Squares and roots of 39989

• 39989 squared (39989²) is 1599120121
• 39989 cubed (39989³) is 63947214518669
• The square root of 39989 is 199.9724981091
• The cube root of 39989 is 34.1963836903

Scales and comparisons

• 39,989 seconds is equal to 11 hours, 6 minutes, 29 seconds.
• To count from 1 to 39,989 would take you about eleven 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 39989 cubic inches would be around 2.8 feet tall.

Recreational maths with 39989

• 39989 backwards is 98993
• The number of decimal digits it has is: 5
• The sum of 39989's digits is 38
• More coming soon!