It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 721 792 is not a prime number.
For example, 490 721 792 can be divided by 2: 490 721 792 / 2 = 245 360 896.
For 490 721 792 to be a prime number, it would have been required that 490 721 792 has only two divisors, i.e., itself and 1.
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490 721 792 is an even number, because it is evenly divisible by 2: 490 721 792 / 2 = 245 360 896.
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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 490 721 792 is about 22 152.241.
Thus, the square root of 490 721 792 is not an integer, and therefore 490 721 792 is not a square number.
The square of a number (here 490 721 792) is the result of the product of this number (490 721 792) by itself (i.e., 490 721 792 × 490 721 792); the square of 490 721 792 is sometimes called "raising 490 721 792 to the power 2", or "490 721 792 squared".
The square of 490 721 792 is 240 807 877 143 691 264 because 490 721 792 × 490 721 792 = 490 721 7922 = 240 807 877 143 691 264.
As a consequence, 490 721 792 is the square root of 240 807 877 143 691 264.
490 721 792 is a number with 9 digits.
The multiples of 490 721 792 are all integers evenly divisible by 490 721 792, that is all numbers such that the remainder of the division by 490 721 792 is zero. There are infinitely many multiples of 490 721 792. The smallest multiples of 490 721 792 are: