# 279

## 279 is an odd composite number composed of two prime numbers multiplied together.

What does the number 279 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 6 divisors.

279 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of six divisors.

## Prime factorization of 279:

### 32 × 31

(3 × 3 × 31)

See below for interesting mathematical facts about the number 279 from the Numbermatics database.

### Names of 279

• Cardinal: 279 can be written as Two hundred seventy-nine.

### Scientific notation

• Scientific notation: 2.79 × 102

### Factors of 279

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 34

### Divisors of 279

• Number of divisors d(n): 6
• Complete list of divisors:
• Sum of all divisors σ(n): 416
• Sum of proper divisors (its aliquot sum) s(n): 137
• 279 is a deficient number, because the sum of its proper divisors (137) is less than itself. Its deficiency is 142

### Bases of 279

• Binary: 1000101112
• Base-36: 7R

### Squares and roots of 279

• 279 squared (2792) is 77841
• 279 cubed (2793) is 21717639
• The square root of 279 is 16.7032930885
• The cube root of 279 is 6.5343350773

### Scales and comparisons

How big is 279?
• 279 seconds is equal to 4 minutes, 39 seconds.
• To count from 1 to 279 would take you about two 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 279 cubic inches would be around 0.5 feet tall.

### Recreational maths with 279

• 279 backwards is 972
• The number of decimal digits it has is: 3
• The sum of 279's digits is 18
• More coming soon!