39981

39,981 is an odd composite number composed of two prime numbers multiplied together.

What does the number 39981 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

39981 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

Prime factorization of 39981:

3 × 13327

See below for interesting mathematical facts about the number 39981 from the Numbermatics database.

Names of 39981

Cardinal: 39981 can be written as Thirty-nine thousand, nine hundred eighty-one.

Scientific notation

Scientific notation: 3.9981 × 10⁴

Factors of 39981

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 2
Sum of prime factors: 13330

Divisors of 39981

Number of divisors d(n): 4
Complete list of divisors:
1 3 13327 39981
Sum of all divisors σ(n): 53312
Sum of proper divisors (its aliquot sum) s(n): 13331
39981 is a deficient number, because the sum of its proper divisors (13331) is less than itself. Its deficiency is 26650

Bases of 39981

Binary: 1001110000101101₂
Hexadecimal: 0x9C2D
Base-36: UUL

Squares and roots of 39981

39981 squared (39981²) is 1598480361
39981 cubed (39981³) is 63908843313141
The square root of 39981 is 199.9524943581
The cube root of 39981 is 34.1941031521

Scales and comparisons

How big is 39981?

39,981 seconds is equal to 11 hours, 6 minutes, 21 seconds.
To count from 1 to 39,981 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 39981 cubic inches would be around 2.8 feet tall.

Recreational maths with 39981

39981 backwards is 18993
The number of decimal digits it has is: 5
The sum of 39981's digits is 30
More coming soon!

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The information we have on file for 39981 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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