It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 489 424 is not a prime number.
For example, 489 424 can be divided by 2: 489 424 / 2 = 244 712.
For 489 424 to be a prime number, it would have been required that 489 424 has only two divisors, i.e., itself and 1.
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489 424 is an even number, because it is evenly divisible by 2: 489 424 / 2 = 244 712.
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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 489 424 is about 699.588.
Thus, the square root of 489 424 is not an integer, and therefore 489 424 is not a square number.
The square of a number (here 489 424) is the result of the product of this number (489 424) by itself (i.e., 489 424 × 489 424); the square of 489 424 is sometimes called "raising 489 424 to the power 2", or "489 424 squared".
The square of 489 424 is 239 535 851 776 because 489 424 × 489 424 = 489 4242 = 239 535 851 776.
As a consequence, 489 424 is the square root of 239 535 851 776.
The multiples of 489 424 are all integers evenly divisible by 489 424, that is all numbers such that the remainder of the division by 489 424 is zero. There are infinitely many multiples of 489 424. The smallest multiples of 489 424 are: