It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 291 is not a prime number.
For example, 490 291 can be divided by 23: 490 291 / 23 = 21 317.
For 490 291 to be a prime number, it would have been required that 490 291 has only two divisors, i.e., itself and 1.
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490 291 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 490 291 is about 700.208.
Thus, the square root of 490 291 is not an integer, and therefore 490 291 is not a square number.
The square of a number (here 490 291) is the result of the product of this number (490 291) by itself (i.e., 490 291 × 490 291); the square of 490 291 is sometimes called "raising 490 291 to the power 2", or "490 291 squared".
The square of 490 291 is 240 385 264 681 because 490 291 × 490 291 = 490 2912 = 240 385 264 681.
As a consequence, 490 291 is the square root of 240 385 264 681.
The multiples of 490 291 are all integers evenly divisible by 490 291, that is all numbers such that the remainder of the division by 490 291 is zero. There are infinitely many multiples of 490 291. The smallest multiples of 490 291 are: