It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 402 997 is not a prime number.
For example, 402 997 can be divided by 7: 402 997 / 7 = 57 571.
For 402 997 to be a prime number, it would have been required that 402 997 has only two divisors, i.e., itself and 1.
Find out more:
402 997 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 402 997 is about 634.820.
Thus, the square root of 402 997 is not an integer, and therefore 402 997 is not a square number.
The square of a number (here 402 997) is the result of the product of this number (402 997) by itself (i.e., 402 997 × 402 997); the square of 402 997 is sometimes called "raising 402 997 to the power 2", or "402 997 squared".
The square of 402 997 is 162 406 582 009 because 402 997 × 402 997 = 402 9972 = 162 406 582 009.
As a consequence, 402 997 is the square root of 162 406 582 009.
The multiples of 402 997 are all integers evenly divisible by 402 997, that is all numbers such that the remainder of the division by 402 997 is zero. There are infinitely many multiples of 402 997. The smallest multiples of 402 997 are: