39990

39,990 is an even composite number composed of five prime numbers multiplied together.

What does the number 39990 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 32 divisors.

39990 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of thirty-two divisors.

Prime factorization of 39990:

2 × 3 × 5 × 31 × 43

See below for interesting mathematical facts about the number 39990 from the Numbermatics database.

Names of 39990

Cardinal: 39990 can be written as Thirty-nine thousand, nine hundred ninety.

Scientific notation

Scientific notation: 3.999 × 10⁴

Factors of 39990

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 5
Sum of prime factors: 84

Divisors of 39990

Number of divisors d(n): 32
Complete list of divisors:
1 2 3 5 6 10 15 30 31 43 62 86 93 129 155 186 215 258 310 430 465 645 930 1290 1333 2666 3999 6665 7998 13330 19995 39990
Sum of all divisors σ(n): 101376
Sum of proper divisors (its aliquot sum) s(n): 61386
39990 is an abundant number, because the sum of its proper divisors (61386) is greater than itself. Its abundance is 21396

Bases of 39990

Binary: 1001110000110110₂
Hexadecimal: 0x9C36
Base-36: UUU

Squares and roots of 39990

39990 squared (39990²) is 1599200100
39990 cubed (39990³) is 63952011999000
The square root of 39990 is 199.9749984373
The cube root of 39990 is 34.1966687361

Scales and comparisons

How big is 39990?

39,990 seconds is equal to 11 hours, 6 minutes, 30 seconds.
To count from 1 to 39,990 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 39990 cubic inches would be around 2.8 feet tall.

Recreational maths with 39990

39990 backwards is 09993
39990 is a Harshad number.
The number of decimal digits it has is: 5
The sum of 39990's digits is 30
More coming soon!

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The information we have on file for 39990 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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