It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 989 689 is not a prime number.
For example, 989 689 can be divided by 17: 989 689 / 17 = 58 217.
For 989 689 to be a prime number, it would have been required that 989 689 has only two divisors, i.e., itself and 1.
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989 689 is an odd number, because it is not evenly divisible by 2.
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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 989 689 is about 994.831.
Thus, the square root of 989 689 is not an integer, and therefore 989 689 is not a square number.
The square of a number (here 989 689) is the result of the product of this number (989 689) by itself (i.e., 989 689 × 989 689); the square of 989 689 is sometimes called "raising 989 689 to the power 2", or "989 689 squared".
The square of 989 689 is 979 484 316 721 because 989 689 × 989 689 = 989 6892 = 979 484 316 721.
As a consequence, 989 689 is the square root of 979 484 316 721.
The multiples of 989 689 are all integers evenly divisible by 989 689, that is all numbers such that the remainder of the division by 989 689 is zero. There are infinitely many multiples of 989 689. The smallest multiples of 989 689 are: