It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 902 is not a prime number.
For example, 490 902 can be divided by 2: 490 902 / 2 = 245 451.
For 490 902 to be a prime number, it would have been required that 490 902 has only two divisors, i.e., itself and 1.
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490 902 is an even number, because it is evenly divisible by 2: 490 902 / 2 = 245 451.
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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 490 902 is about 700.644.
Thus, the square root of 490 902 is not an integer, and therefore 490 902 is not a square number.
The square of a number (here 490 902) is the result of the product of this number (490 902) by itself (i.e., 490 902 × 490 902); the square of 490 902 is sometimes called "raising 490 902 to the power 2", or "490 902 squared".
The square of 490 902 is 240 984 773 604 because 490 902 × 490 902 = 490 9022 = 240 984 773 604.
As a consequence, 490 902 is the square root of 240 984 773 604.
The multiples of 490 902 are all integers evenly divisible by 490 902, that is all numbers such that the remainder of the division by 490 902 is zero. There are infinitely many multiples of 490 902. The smallest multiples of 490 902 are: