It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 489 997 is not a prime number.
For example, 489 997 can be divided by 157: 489 997 / 157 = 3 121.
For 489 997 to be a prime number, it would have been required that 489 997 has only two divisors, i.e., itself and 1.
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489 997 is an odd number, because it is not evenly divisible by 2.
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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 489 997 is about 699.998.
Thus, the square root of 489 997 is not an integer, and therefore 489 997 is not a square number.
The square of a number (here 489 997) is the result of the product of this number (489 997) by itself (i.e., 489 997 × 489 997); the square of 489 997 is sometimes called "raising 489 997 to the power 2", or "489 997 squared".
The square of 489 997 is 240 097 060 009 because 489 997 × 489 997 = 489 9972 = 240 097 060 009.
As a consequence, 489 997 is the square root of 240 097 060 009.
The multiples of 489 997 are all integers evenly divisible by 489 997, that is all numbers such that the remainder of the division by 489 997 is zero. There are infinitely many multiples of 489 997. The smallest multiples of 489 997 are: