# 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:
• 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
• 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!