It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 396 164 is not a prime number.
For example, 396 164 can be divided by 2: 396 164 / 2 = 198 082.
For 396 164 to be a prime number, it would have been required that 396 164 has only two divisors, i.e., itself and 1.
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396 164 is an even number, because it is evenly divisible by 2: 396 164 / 2 = 198 082.
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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 396 164 is about 629.416.
Thus, the square root of 396 164 is not an integer, and therefore 396 164 is not a square number.
The square of a number (here 396 164) is the result of the product of this number (396 164) by itself (i.e., 396 164 × 396 164); the square of 396 164 is sometimes called "raising 396 164 to the power 2", or "396 164 squared".
The square of 396 164 is 156 945 914 896 because 396 164 × 396 164 = 396 1642 = 156 945 914 896.
As a consequence, 396 164 is the square root of 156 945 914 896.
The multiples of 396 164 are all integers evenly divisible by 396 164, that is all numbers such that the remainder of the division by 396 164 is zero. There are infinitely many multiples of 396 164. The smallest multiples of 396 164 are: