It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 493 442 is not a prime number.
For example, 493 442 can be divided by 2: 493 442 / 2 = 246 721.
For 493 442 to be a prime number, it would have been required that 493 442 has only two divisors, i.e., itself and 1.
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493 442 is an even number, because it is evenly divisible by 2: 493 442 / 2 = 246 721.
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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 493 442 is about 702.454.
Thus, the square root of 493 442 is not an integer, and therefore 493 442 is not a square number.
The square of a number (here 493 442) is the result of the product of this number (493 442) by itself (i.e., 493 442 × 493 442); the square of 493 442 is sometimes called "raising 493 442 to the power 2", or "493 442 squared".
The square of 493 442 is 243 485 007 364 because 493 442 × 493 442 = 493 4422 = 243 485 007 364.
As a consequence, 493 442 is the square root of 243 485 007 364.
The multiples of 493 442 are all integers evenly divisible by 493 442, that is all numbers such that the remainder of the division by 493 442 is zero. There are infinitely many multiples of 493 442. The smallest multiples of 493 442 are: