# 1390

## 1,390 is an even composite number composed of three prime numbers multiplied together.

What does the number 1390 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

1390 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

## Prime factorization of 1390:

### 2 × 5 × 139

See below for interesting mathematical facts about the number 1390 from the Numbermatics database.

### Names of 1390

• Cardinal: 1390 can be written as One thousand, three hundred ninety.

### Scientific notation

• Scientific notation: 1.39 × 103

### Factors of 1390

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 146

### Divisors of 1390

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 2520
• Sum of proper divisors (its aliquot sum) s(n): 1130
• 1390 is a deficient number, because the sum of its proper divisors (1130) is less than itself. Its deficiency is 260

### Bases of 1390

• Binary: 101011011102
• Base-36: 12M

### Squares and roots of 1390

• 1390 squared (13902) is 1932100
• 1390 cubed (13903) is 2685619000
• The square root of 1390 is 37.2827037649
• The cube root of 1390 is 11.1601902991

### Scales and comparisons

How big is 1390?
• 1,390 seconds is equal to 23 minutes, 10 seconds.
• To count from 1 to 1,390 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 1390 cubic inches would be around 0.9 feet tall.

### Recreational maths with 1390

• 1390 backwards is 0931
• The number of decimal digits it has is: 4
• The sum of 1390's digits is 13
• More coming soon!