It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 498 438 is not a prime number.
For example, 498 438 can be divided by 2: 498 438 / 2 = 249 219.
For 498 438 to be a prime number, it would have been required that 498 438 has only two divisors, i.e., itself and 1.
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498 438 is an even number, because it is evenly divisible by 2: 498 438 / 2 = 249 219.
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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 498 438 is about 706.001.
Thus, the square root of 498 438 is not an integer, and therefore 498 438 is not a square number.
The square of a number (here 498 438) is the result of the product of this number (498 438) by itself (i.e., 498 438 × 498 438); the square of 498 438 is sometimes called "raising 498 438 to the power 2", or "498 438 squared".
The square of 498 438 is 248 440 439 844 because 498 438 × 498 438 = 498 4382 = 248 440 439 844.
As a consequence, 498 438 is the square root of 248 440 439 844.
The multiples of 498 438 are all integers evenly divisible by 498 438, that is all numbers such that the remainder of the division by 498 438 is zero. There are infinitely many multiples of 498 438. The smallest multiples of 498 438 are: