It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 064 809 is not a prime number.
For example, 490 064 809 can be divided by 13: 490 064 809 / 13 = 37 697 293.
For 490 064 809 to be a prime number, it would have been required that 490 064 809 has only two divisors, i.e., itself and 1.
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490 064 809 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 490 064 809 is about 22 137.407.
Thus, the square root of 490 064 809 is not an integer, and therefore 490 064 809 is not a square number.
The square of a number (here 490 064 809) is the result of the product of this number (490 064 809) by itself (i.e., 490 064 809 × 490 064 809); the square of 490 064 809 is sometimes called "raising 490 064 809 to the power 2", or "490 064 809 squared".
The square of 490 064 809 is 240 163 517 020 206 496 because 490 064 809 × 490 064 809 = 490 064 8092 = 240 163 517 020 206 496.
As a consequence, 490 064 809 is the square root of 240 163 517 020 206 496.
490 064 809 is a number with 9 digits.
The multiples of 490 064 809 are all integers evenly divisible by 490 064 809, that is all numbers such that the remainder of the division by 490 064 809 is zero. There are infinitely many multiples of 490 064 809. The smallest multiples of 490 064 809 are: