It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 491 724 416 is not a prime number.
For example, 491 724 416 can be divided by 2: 491 724 416 / 2 = 245 862 208.
For 491 724 416 to be a prime number, it would have been required that 491 724 416 has only two divisors, i.e., itself and 1.
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491 724 416 is an even number, because it is evenly divisible by 2: 491 724 416 / 2 = 245 862 208.
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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 491 724 416 is about 22 174.860.
Thus, the square root of 491 724 416 is not an integer, and therefore 491 724 416 is not a square number.
The square of a number (here 491 724 416) is the result of the product of this number (491 724 416) by itself (i.e., 491 724 416 × 491 724 416); the square of 491 724 416 is sometimes called "raising 491 724 416 to the power 2", or "491 724 416 squared".
The square of 491 724 416 is 241 792 901 290 541 056 because 491 724 416 × 491 724 416 = 491 724 4162 = 241 792 901 290 541 056.
As a consequence, 491 724 416 is the square root of 241 792 901 290 541 056.
491 724 416 is a number with 9 digits.
The multiples of 491 724 416 are all integers evenly divisible by 491 724 416, that is all numbers such that the remainder of the division by 491 724 416 is zero. There are infinitely many multiples of 491 724 416. The smallest multiples of 491 724 416 are: