# 9985

## 9,985 is an odd composite number composed of two prime numbers multiplied together.

What does the number 9985 look like?

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

9985 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 9985:

### 5 × 1997

See below for interesting mathematical facts about the number 9985 from the Numbermatics database.

### Names of 9985

• Cardinal: 9985 can be written as Nine thousand, nine hundred eighty-five.

### Scientific notation

• Scientific notation: 9.985 × 103

### Factors of 9985

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 2002

### Divisors of 9985

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 11988
• Sum of proper divisors (its aliquot sum) s(n): 2003
• 9985 is a deficient number, because the sum of its proper divisors (2003) is less than itself. Its deficiency is 7982

### Bases of 9985

• Binary: 100111000000012
• Base-36: 7PD

### Squares and roots of 9985

• 9985 squared (99852) is 99700225
• 9985 cubed (99853) is 995506746625
• The square root of 9985 is 99.9249718539
• The cube root of 9985 is 21.5335693369

### Scales and comparisons

How big is 9985?
• 9,985 seconds is equal to 2 hours, 46 minutes, 25 seconds.
• To count from 1 to 9,985 would take you about two 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 9985 cubic inches would be around 1.8 feet tall.

### Recreational maths with 9985

• 9985 backwards is 5899
• The number of decimal digits it has is: 4
• The sum of 9985's digits is 31
• More coming soon!