Is 890 a prime number? What are the divisors of 890?

## Parity of 890

890 is an even number, because it is evenly divisible by 2: 890 / 2 = 445.

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## Is 890 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 890 is about 29.833.

Thus, the square root of 890 is not an integer, and therefore 890 is not a square number.

## What is the square number of 890?

The square of a number (here 890) is the result of the product of this number (890) by itself (i.e., 890 × 890); the square of 890 is sometimes called "raising 890 to the power 2", or "890 squared".

The square of 890 is 792 100 because 890 × 890 = 8902 = 792 100.

As a consequence, 890 is the square root of 792 100.

## Number of digits of 890

890 is a number with 3 digits.

## What are the multiples of 890?

The multiples of 890 are all integers evenly divisible by 890, that is all numbers such that the remainder of the division by 890 is zero. There are infinitely many multiples of 890. The smallest multiples of 890 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 890). 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 29.833). 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 890

• Preceding numbers: …888, 889
• Following numbers: 891, 892

### Nearest numbers from 890

• Preceding prime number: 887
• Following prime number: 907
Find out whether some integer is a prime number