# 9986

## 9,986 is an even composite number composed of two prime numbers multiplied together.

What does the number 9986 look like?

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

9986 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

## Prime factorization of 9986:

### 2 × 4993

See below for interesting mathematical facts about the number 9986 from the Numbermatics database.

### Names of 9986

• Cardinal: 9986 can be written as Nine thousand, nine hundred eighty-six.

### Scientific notation

• Scientific notation: 9.986 × 103

### Factors of 9986

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 4995

### Divisors of 9986

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 14982
• Sum of proper divisors (its aliquot sum) s(n): 4996
• 9986 is a deficient number, because the sum of its proper divisors (4996) is less than itself. Its deficiency is 4990

### Bases of 9986

• Binary: 100111000000102
• Base-36: 7PE

### Squares and roots of 9986

• 9986 squared (99862) is 99720196
• 9986 cubed (99863) is 995805877256
• The square root of 9986 is 99.9299754829
• The cube root of 9986 is 21.5342881763

### Scales and comparisons

How big is 9986?
• 9,986 seconds is equal to 2 hours, 46 minutes, 26 seconds.
• To count from 1 to 9,986 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 9986 cubic inches would be around 1.8 feet tall.

### Recreational maths with 9986

• 9986 backwards is 6899
• The number of decimal digits it has is: 4
• The sum of 9986's digits is 32
• More coming soon!