It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 588 278 is not a prime number.
For example, 490 588 278 can be divided by 2: 490 588 278 / 2 = 245 294 139.
For 490 588 278 to be a prime number, it would have been required that 490 588 278 has only two divisors, i.e., itself and 1.
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490 588 278 is an even number, because it is evenly divisible by 2: 490 588 278 / 2 = 245 294 139.
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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 490 588 278 is about 22 149.227.
Thus, the square root of 490 588 278 is not an integer, and therefore 490 588 278 is not a square number.
The square of a number (here 490 588 278) is the result of the product of this number (490 588 278) by itself (i.e., 490 588 278 × 490 588 278); the square of 490 588 278 is sometimes called "raising 490 588 278 to the power 2", or "490 588 278 squared".
The square of 490 588 278 is 240 676 858 511 005 280 because 490 588 278 × 490 588 278 = 490 588 2782 = 240 676 858 511 005 280.
As a consequence, 490 588 278 is the square root of 240 676 858 511 005 280.
490 588 278 is a number with 9 digits.
The multiples of 490 588 278 are all integers evenly divisible by 490 588 278, that is all numbers such that the remainder of the division by 490 588 278 is zero. There are infinitely many multiples of 490 588 278. The smallest multiples of 490 588 278 are: