It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 491 484 is not a prime number.
For example, 491 484 can be divided by 2: 491 484 / 2 = 245 742.
For 491 484 to be a prime number, it would have been required that 491 484 has only two divisors, i.e., itself and 1.
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491 484 is an even number, because it is evenly divisible by 2: 491 484 / 2 = 245 742.
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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 491 484 is about 701.059.
Thus, the square root of 491 484 is not an integer, and therefore 491 484 is not a square number.
The square of a number (here 491 484) is the result of the product of this number (491 484) by itself (i.e., 491 484 × 491 484); the square of 491 484 is sometimes called "raising 491 484 to the power 2", or "491 484 squared".
The square of 491 484 is 241 556 522 256 because 491 484 × 491 484 = 491 4842 = 241 556 522 256.
As a consequence, 491 484 is the square root of 241 556 522 256.
The multiples of 491 484 are all integers evenly divisible by 491 484, that is all numbers such that the remainder of the division by 491 484 is zero. There are infinitely many multiples of 491 484. The smallest multiples of 491 484 are: