# 3990

## 3,990 is an even composite number composed of five prime numbers multiplied together.

What does the number 3990 look like?

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

3990 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 3990:

### 2 × 3 × 5 × 7 × 19

See below for interesting mathematical facts about the number 3990 from the Numbermatics database.

### Names of 3990

• Cardinal: 3990 can be written as Three thousand, nine hundred ninety.

### Scientific notation

• Scientific notation: 3.99 × 103

### Factors of 3990

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 36

### Divisors of 3990

• Number of divisors d(n): 32
• Complete list of divisors:
• Sum of all divisors σ(n): 11520
• Sum of proper divisors (its aliquot sum) s(n): 7530
• 3990 is an abundant number, because the sum of its proper divisors (7530) is greater than itself. Its abundance is 3540

### Bases of 3990

• Binary: 1111100101102
• Base-36: 32U

### Squares and roots of 3990

• 3990 squared (39902) is 15920100
• 3990 cubed (39903) is 63521199000
• The square root of 3990 is 63.1664467895
• The cube root of 3990 is 15.8607711387

### Scales and comparisons

How big is 3990?
• 3,990 seconds is equal to 1 hour, 6 minutes, 30 seconds.
• To count from 1 to 3,990 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 3990 cubic inches would be around 1.3 feet tall.

### Recreational maths with 3990

• 3990 backwards is 0993
• 3990 is a Harshad number.
• The number of decimal digits it has is: 4
• The sum of 3990's digits is 21
• More coming soon!

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"Number 3990 - Facts about the integer". Numbermatics.com. 2023. Web. 30 March 2023.

APA style:
Numbermatics. (2023). Number 3990 - Facts about the integer. Retrieved 30 March 2023, from https://numbermatics.com/n/3990/

Chicago style:
Numbermatics. 2023. "Number 3990 - Facts about the integer". https://numbermatics.com/n/3990/

The information we have on file for 3990 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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