# 16399

## 16,399 is an odd composite number composed of two prime numbers multiplied together.

What does the number 16399 look like?

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

16399 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 16399:

### 232 × 31

(23 × 23 × 31)

See below for interesting mathematical facts about the number 16399 from the Numbermatics database.

### Names of 16399

• Cardinal: 16399 can be written as Sixteen thousand, three hundred ninety-nine.

### Scientific notation

• Scientific notation: 1.6399 × 104

### Factors of 16399

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 54

### Divisors of 16399

• Number of divisors d(n): 6
• Complete list of divisors:
• Sum of all divisors σ(n): 17696
• Sum of proper divisors (its aliquot sum) s(n): 1297
• 16399 is a deficient number, because the sum of its proper divisors (1297) is less than itself. Its deficiency is 15102

### Bases of 16399

• Binary: 1000000000011112
• Base-36: CNJ

### Squares and roots of 16399

• 16399 squared (163992) is 268927201
• 16399 cubed (163993) is 4410137169199
• The square root of 16399 is 128.0585803451
• The cube root of 16399 is 25.4061654489

### Scales and comparisons

How big is 16399?
• 16,399 seconds is equal to 4 hours, 33 minutes, 19 seconds.
• To count from 1 to 16,399 would take you about four 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 16399 cubic inches would be around 2.1 feet tall.

### Recreational maths with 16399

• 16399 backwards is 99361
• The number of decimal digits it has is: 5
• The sum of 16399's digits is 28
• More coming soon!