# 791

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

What does the number 791 look like?

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

791 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 791:

### 7 × 113

See below for interesting mathematical facts about the number 791 from the Numbermatics database.

### Names of 791

• Cardinal: 791 can be written as Seven hundred ninety-one.

### Scientific notation

• Scientific notation: 7.91 × 102

### Factors of 791

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 120

### Divisors of 791

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 912
• Sum of proper divisors (its aliquot sum) s(n): 121
• 791 is a deficient number, because the sum of its proper divisors (121) is less than itself. Its deficiency is 670

### Bases of 791

• Binary: 11000101112
• Base-36: LZ

### Squares and roots of 791

• 791 squared (7912) is 625681
• 791 cubed (7913) is 494913671
• The square root of 791 is 28.1247222209
• The cube root of 791 is 9.2482343843

### Scales and comparisons

How big is 791?
• 791 seconds is equal to 13 minutes, 11 seconds.
• To count from 1 to 791 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 791 cubic inches would be around 0.8 feet tall.

### Recreational maths with 791

• 791 backwards is 197
• The number of decimal digits it has is: 3
• The sum of 791's digits is 17
• More coming soon!