It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 489 996 is not a prime number.
For example, 489 996 can be divided by 2: 489 996 / 2 = 244 998.
For 489 996 to be a prime number, it would have been required that 489 996 has only two divisors, i.e., itself and 1.
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489 996 is an even number, because it is evenly divisible by 2: 489 996 / 2 = 244 998.
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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 489 996 is about 699.997.
Thus, the square root of 489 996 is not an integer, and therefore 489 996 is not a square number.
The square of a number (here 489 996) is the result of the product of this number (489 996) by itself (i.e., 489 996 × 489 996); the square of 489 996 is sometimes called "raising 489 996 to the power 2", or "489 996 squared".
The square of 489 996 is 240 096 080 016 because 489 996 × 489 996 = 489 9962 = 240 096 080 016.
As a consequence, 489 996 is the square root of 240 096 080 016.
The multiples of 489 996 are all integers evenly divisible by 489 996, that is all numbers such that the remainder of the division by 489 996 is zero. There are infinitely many multiples of 489 996. The smallest multiples of 489 996 are: