It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 397 672 is not a prime number.
For example, 397 672 can be divided by 2: 397 672 / 2 = 198 836.
For 397 672 to be a prime number, it would have been required that 397 672 has only two divisors, i.e., itself and 1.
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397 672 is an even number, because it is evenly divisible by 2: 397 672 / 2 = 198 836.
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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 397 672 is about 630.612.
Thus, the square root of 397 672 is not an integer, and therefore 397 672 is not a square number.
The square of a number (here 397 672) is the result of the product of this number (397 672) by itself (i.e., 397 672 × 397 672); the square of 397 672 is sometimes called "raising 397 672 to the power 2", or "397 672 squared".
The square of 397 672 is 158 143 019 584 because 397 672 × 397 672 = 397 6722 = 158 143 019 584.
As a consequence, 397 672 is the square root of 158 143 019 584.
The multiples of 397 672 are all integers evenly divisible by 397 672, that is all numbers such that the remainder of the division by 397 672 is zero. There are infinitely many multiples of 397 672. The smallest multiples of 397 672 are: