It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 638 924 is not a prime number.
For example, 490 638 924 can be divided by 2: 490 638 924 / 2 = 245 319 462.
For 490 638 924 to be a prime number, it would have been required that 490 638 924 has only two divisors, i.e., itself and 1.
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490 638 924 is an even number, because it is evenly divisible by 2: 490 638 924 / 2 = 245 319 462.
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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 490 638 924 is about 22 150.371.
Thus, the square root of 490 638 924 is not an integer, and therefore 490 638 924 is not a square number.
The square of a number (here 490 638 924) is the result of the product of this number (490 638 924) by itself (i.e., 490 638 924 × 490 638 924); the square of 490 638 924 is sometimes called "raising 490 638 924 to the power 2", or "490 638 924 squared".
The square of 490 638 924 is 240 726 553 743 877 760 because 490 638 924 × 490 638 924 = 490 638 9242 = 240 726 553 743 877 760.
As a consequence, 490 638 924 is the square root of 240 726 553 743 877 760.
490 638 924 is a number with 9 digits.
The multiples of 490 638 924 are all integers evenly divisible by 490 638 924, that is all numbers such that the remainder of the division by 490 638 924 is zero. There are infinitely many multiples of 490 638 924. The smallest multiples of 490 638 924 are: