It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 098 is not a prime number.
For example, 490 098 can be divided by 2: 490 098 / 2 = 245 049.
For 490 098 to be a prime number, it would have been required that 490 098 has only two divisors, i.e., itself and 1.
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490 098 is an even number, because it is evenly divisible by 2: 490 098 / 2 = 245 049.
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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 490 098 is about 700.070.
Thus, the square root of 490 098 is not an integer, and therefore 490 098 is not a square number.
The square of a number (here 490 098) is the result of the product of this number (490 098) by itself (i.e., 490 098 × 490 098); the square of 490 098 is sometimes called "raising 490 098 to the power 2", or "490 098 squared".
The square of 490 098 is 240 196 049 604 because 490 098 × 490 098 = 490 0982 = 240 196 049 604.
As a consequence, 490 098 is the square root of 240 196 049 604.
The multiples of 490 098 are all integers evenly divisible by 490 098, that is all numbers such that the remainder of the division by 490 098 is zero. There are infinitely many multiples of 490 098. The smallest multiples of 490 098 are: