It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 489 298 is not a prime number.
For example, 489 298 can be divided by 2: 489 298 / 2 = 244 649.
For 489 298 to be a prime number, it would have been required that 489 298 has only two divisors, i.e., itself and 1.
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489 298 is an even number, because it is evenly divisible by 2: 489 298 / 2 = 244 649.
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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 489 298 is about 699.498.
Thus, the square root of 489 298 is not an integer, and therefore 489 298 is not a square number.
The square of a number (here 489 298) is the result of the product of this number (489 298) by itself (i.e., 489 298 × 489 298); the square of 489 298 is sometimes called "raising 489 298 to the power 2", or "489 298 squared".
The square of 489 298 is 239 412 532 804 because 489 298 × 489 298 = 489 2982 = 239 412 532 804.
As a consequence, 489 298 is the square root of 239 412 532 804.
The multiples of 489 298 are all integers evenly divisible by 489 298, that is all numbers such that the remainder of the division by 489 298 is zero. There are infinitely many multiples of 489 298. The smallest multiples of 489 298 are: