It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 002 494 is not a prime number.
For example, 490 002 494 can be divided by 2: 490 002 494 / 2 = 245 001 247.
For 490 002 494 to be a prime number, it would have been required that 490 002 494 has only two divisors, i.e., itself and 1.
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490 002 494 is an even number, because it is evenly divisible by 2: 490 002 494 / 2 = 245 001 247.
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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 490 002 494 is about 22 136.000.
Thus, the square root of 490 002 494 is not an integer, and therefore 490 002 494 is not a square number.
The square of a number (here 490 002 494) is the result of the product of this number (490 002 494) by itself (i.e., 490 002 494 × 490 002 494); the square of 490 002 494 is sometimes called "raising 490 002 494 to the power 2", or "490 002 494 squared".
The square of 490 002 494 is 240 102 444 126 220 032 because 490 002 494 × 490 002 494 = 490 002 4942 = 240 102 444 126 220 032.
As a consequence, 490 002 494 is the square root of 240 102 444 126 220 032.
490 002 494 is a number with 9 digits.
The multiples of 490 002 494 are all integers evenly divisible by 490 002 494, that is all numbers such that the remainder of the division by 490 002 494 is zero. There are infinitely many multiples of 490 002 494. The smallest multiples of 490 002 494 are: