Is 440 a prime number? What are the divisors of 440?

## Parity of 440

440 is an even number, because it is evenly divisible by 2: 440 / 2 = 220.

Find out more:

## Is 440 a perfect square number?

A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 440 is about 20.976.

Thus, the square root of 440 is not an integer, and therefore 440 is not a square number.

## What is the square number of 440?

The square of a number (here 440) is the result of the product of this number (440) by itself (i.e., 440 × 440); the square of 440 is sometimes called "raising 440 to the power 2", or "440 squared".

The square of 440 is 193 600 because 440 × 440 = 4402 = 193 600.

As a consequence, 440 is the square root of 193 600.

## Number of digits of 440

440 is a number with 3 digits.

## What are the multiples of 440?

The multiples of 440 are all integers evenly divisible by 440, that is all numbers such that the remainder of the division by 440 is zero. There are infinitely many multiples of 440. The smallest multiples of 440 are:

## How to determine whether an integer is a prime number?

To determine the primality of a number, several algorithms can be used. The most naive technique is to test all divisors strictly smaller to the number of which we want to determine the primality (here 440). First, we can eliminate all even numbers greater than 2 (and hence 4, 6, 8…). Then, we can stop this check when we reach the square root of the number of which we want to determine the primality (here the square root is about 20.976). Historically, the sieve of Eratosthenes (dating from the Greek mathematics) implements this technique in a relatively efficient manner.

More modern techniques include the sieve of Atkin, probabilistic algorithms, and the cyclotomic AKS test.

## Numbers near 440

• Preceding numbers: …438, 439
• Following numbers: 441, 442

### Nearest numbers from 440

• Preceding prime number: 439
• Following prime number: 443
Find out whether some integer is a prime number