39890

Names of 39890

• Cardinal: 39890 can be written as Thirty-nine thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 3.989 × 10⁴

Factors of 39890

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 3996

Divisors of 39890

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 5 10 3989 7978 19945 39890
• Sum of all divisors σ(n): 71820
• Sum of proper divisors (its aliquot sum) s(n): 31930
• 39890 is a deficient number, because the sum of its proper divisors (31930) is less than itself. Its deficiency is 7960

Bases of 39890

• Binary: 1001101111010010₂
• Hexadecimal: 0x9BD2
• Base-36: US2

Squares and roots of 39890

• 39890 squared (39890²) is 1591212100
• 39890 cubed (39890³) is 63473450669000
• The square root of 39890 is 199.7248106771
• The cube root of 39890 is 34.1681405935

Scales and comparisons

• 39,890 seconds is equal to 11 hours, 4 minutes, 50 seconds.
• To count from 1 to 39,890 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 39890 cubic inches would be around 2.8 feet tall.

Recreational maths with 39890

• 39890 backwards is 09893
• The number of decimal digits it has is: 5
• The sum of 39890's digits is 29
• More coming soon!