It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 494 988 is not a prime number.
For example, 494 988 can be divided by 2: 494 988 / 2 = 247 494.
For 494 988 to be a prime number, it would have been required that 494 988 has only two divisors, i.e., itself and 1.
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494 988 is an even number, because it is evenly divisible by 2: 494 988 / 2 = 247 494.
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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 494 988 is about 703.554.
Thus, the square root of 494 988 is not an integer, and therefore 494 988 is not a square number.
The square of a number (here 494 988) is the result of the product of this number (494 988) by itself (i.e., 494 988 × 494 988); the square of 494 988 is sometimes called "raising 494 988 to the power 2", or "494 988 squared".
The square of 494 988 is 245 013 120 144 because 494 988 × 494 988 = 494 9882 = 245 013 120 144.
As a consequence, 494 988 is the square root of 245 013 120 144.
The multiples of 494 988 are all integers evenly divisible by 494 988, that is all numbers such that the remainder of the division by 494 988 is zero. There are infinitely many multiples of 494 988. The smallest multiples of 494 988 are: