It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 397 491 is not a prime number.
For example, 397 491 can be divided by 3: 397 491 / 3 = 132 497.
Find out more:
For 397 491 to be a prime number, it would have been required that 397 491 has only two divisors, i.e., itself and 1.
Find out more:
397 491 is an odd number, because it is not evenly divisible by 2.
Find out more:
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 397 491 is about 630.469.
Thus, the square root of 397 491 is not an integer, and therefore 397 491 is not a square number.
The square of a number (here 397 491) is the result of the product of this number (397 491) by itself (i.e., 397 491 × 397 491); the square of 397 491 is sometimes called "raising 397 491 to the power 2", or "397 491 squared".
The square of 397 491 is 157 999 095 081 because 397 491 × 397 491 = 397 4912 = 157 999 095 081.
As a consequence, 397 491 is the square root of 157 999 095 081.
The multiples of 397 491 are all integers evenly divisible by 397 491, that is all numbers such that the remainder of the division by 397 491 is zero. There are infinitely many multiples of 397 491. The smallest multiples of 397 491 are: