3985

3,985 is an odd composite number composed of two prime numbers multiplied together.

What does the number 3985 look like?

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

3985 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 3985:

5 × 797

See below for interesting mathematical facts about the number 3985 from the Numbermatics database.

Names of 3985

Cardinal: 3985 can be written as Three thousand, nine hundred eighty-five.

Scientific notation

Scientific notation: 3.985 × 10³

Factors of 3985

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 2
Sum of prime factors: 802

Divisors of 3985

Number of divisors d(n): 4
Complete list of divisors:
1 5 797 3985
Sum of all divisors σ(n): 4788
Sum of proper divisors (its aliquot sum) s(n): 803
3985 is a deficient number, because the sum of its proper divisors (803) is less than itself. Its deficiency is 3182

Bases of 3985

Binary: 111110010001₂
Hexadecimal: 0xF91
Base-36: 32P

Squares and roots of 3985

3985 squared (3985²) is 15880225
3985 cubed (3985³) is 63282696625
The square root of 3985 is 63.1268564083
The cube root of 3985 is 15.8541431515

Scales and comparisons

How big is 3985?

3,985 seconds is equal to 1 hour, 6 minutes, 25 seconds.
To count from 1 to 3,985 would take you about six minutes.

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 3985 cubic inches would be around 1.3 feet tall.

Recreational maths with 3985

3985 backwards is 5893
The number of decimal digits it has is: 4
The sum of 3985's digits is 25
More coming soon!

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The information we have on file for 3985 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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