It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 497 is not a prime number.
For example, 490 497 can be divided by 3: 490 497 / 3 = 163 499.
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For 490 497 to be a prime number, it would have been required that 490 497 has only two divisors, i.e., itself and 1.
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490 497 is an odd number, because it is not evenly divisible by 2.
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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 490 497 is about 700.355.
Thus, the square root of 490 497 is not an integer, and therefore 490 497 is not a square number.
The square of a number (here 490 497) is the result of the product of this number (490 497) by itself (i.e., 490 497 × 490 497); the square of 490 497 is sometimes called "raising 490 497 to the power 2", or "490 497 squared".
The square of 490 497 is 240 587 307 009 because 490 497 × 490 497 = 490 4972 = 240 587 307 009.
As a consequence, 490 497 is the square root of 240 587 307 009.
The multiples of 490 497 are all integers evenly divisible by 490 497, that is all numbers such that the remainder of the division by 490 497 is zero. There are infinitely many multiples of 490 497. The smallest multiples of 490 497 are: