39987

39,987 is an odd composite number composed of two prime numbers multiplied together.

What does the number 39987 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 8 divisors.

39987 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of eight divisors.

Prime factorization of 39987:

3³ × 1481

(3 × 3 × 3 × 1481)

See below for interesting mathematical facts about the number 39987 from the Numbermatics database.

Names of 39987

Cardinal: 39987 can be written as Thirty-nine thousand, nine hundred eighty-seven.

Scientific notation

Scientific notation: 3.9987 × 10⁴

Factors of 39987

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 4
Sum of prime factors: 1484

Divisors of 39987

Number of divisors d(n): 8
Complete list of divisors:
1 3 9 27 1481 4443 13329 39987
Sum of all divisors σ(n): 59280
Sum of proper divisors (its aliquot sum) s(n): 19293
39987 is a deficient number, because the sum of its proper divisors (19293) is less than itself. Its deficiency is 20694

Bases of 39987

Binary: 1001110000110011₂
Hexadecimal: 0x9C33
Base-36: UUR

Squares and roots of 39987

39987 squared (39987²) is 1598960169
39987 cubed (39987³) is 63937620277803
The square root of 39987 is 199.9674973589
The cube root of 39987 is 34.1958135843

Scales and comparisons

How big is 39987?

39,987 seconds is equal to 11 hours, 6 minutes, 27 seconds.
To count from 1 to 39,987 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 39987 cubic inches would be around 2.8 feet tall.

Recreational maths with 39987

39987 backwards is 78993
The number of decimal digits it has is: 5
The sum of 39987's digits is 36
More coming soon!

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The information we have on file for 39987 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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