It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 397 012 is not a prime number.
For example, 397 012 can be divided by 2: 397 012 / 2 = 198 506.
For 397 012 to be a prime number, it would have been required that 397 012 has only two divisors, i.e., itself and 1.
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397 012 is an even number, because it is evenly divisible by 2: 397 012 / 2 = 198 506.
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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 397 012 is about 630.089.
Thus, the square root of 397 012 is not an integer, and therefore 397 012 is not a square number.
The square of a number (here 397 012) is the result of the product of this number (397 012) by itself (i.e., 397 012 × 397 012); the square of 397 012 is sometimes called "raising 397 012 to the power 2", or "397 012 squared".
The square of 397 012 is 157 618 528 144 because 397 012 × 397 012 = 397 0122 = 157 618 528 144.
As a consequence, 397 012 is the square root of 157 618 528 144.
The multiples of 397 012 are all integers evenly divisible by 397 012, that is all numbers such that the remainder of the division by 397 012 is zero. There are infinitely many multiples of 397 012. The smallest multiples of 397 012 are: