# 1397

## 1,397 is an odd composite number composed of two prime numbers multiplied together.

What does the number 1397 look like?

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

1397 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 1397:

### 11 × 127

See below for interesting mathematical facts about the number 1397 from the Numbermatics database.

### Names of 1397

• Cardinal: 1397 can be written as One thousand, three hundred ninety-seven.

### Scientific notation

• Scientific notation: 1.397 × 103

### Factors of 1397

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 138

### Divisors of 1397

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 1536
• Sum of proper divisors (its aliquot sum) s(n): 139
• 1397 is a deficient number, because the sum of its proper divisors (139) is less than itself. Its deficiency is 1258

### Bases of 1397

• Binary: 101011101012
• Base-36: 12T

### Squares and roots of 1397

• 1397 squared (13972) is 1951609
• 1397 cubed (13973) is 2726397773
• The square root of 1397 is 37.3764631821
• The cube root of 1397 is 11.1788930711

### Scales and comparisons

How big is 1397?
• 1,397 seconds is equal to 23 minutes, 17 seconds.
• To count from 1 to 1,397 would take you about twenty-three 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 1397 cubic inches would be around 0.9 feet tall.

### Recreational maths with 1397

• 1397 backwards is 7931
• The number of decimal digits it has is: 4
• The sum of 1397's digits is 20
• More coming soon!