It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 289 is not a prime number.
For example, 490 289 can be divided by 229: 490 289 / 229 = 2 141.
For 490 289 to be a prime number, it would have been required that 490 289 has only two divisors, i.e., itself and 1.
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490 289 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 490 289 is about 700.206.
Thus, the square root of 490 289 is not an integer, and therefore 490 289 is not a square number.
The square of a number (here 490 289) is the result of the product of this number (490 289) by itself (i.e., 490 289 × 490 289); the square of 490 289 is sometimes called "raising 490 289 to the power 2", or "490 289 squared".
The square of 490 289 is 240 383 303 521 because 490 289 × 490 289 = 490 2892 = 240 383 303 521.
As a consequence, 490 289 is the square root of 240 383 303 521.
The multiples of 490 289 are all integers evenly divisible by 490 289, that is all numbers such that the remainder of the division by 490 289 is zero. There are infinitely many multiples of 490 289. The smallest multiples of 490 289 are: