It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 494 240 478 is not a prime number.
For example, 494 240 478 can be divided by 2: 494 240 478 / 2 = 247 120 239.
For 494 240 478 to be a prime number, it would have been required that 494 240 478 has only two divisors, i.e., itself and 1.
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494 240 478 is an even number, because it is evenly divisible by 2: 494 240 478 / 2 = 247 120 239.
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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 494 240 478 is about 22 231.520.
Thus, the square root of 494 240 478 is not an integer, and therefore 494 240 478 is not a square number.
The square of a number (here 494 240 478) is the result of the product of this number (494 240 478) by itself (i.e., 494 240 478 × 494 240 478); the square of 494 240 478 is sometimes called "raising 494 240 478 to the power 2", or "494 240 478 squared".
The square of 494 240 478 is 244 273 650 093 668 480 because 494 240 478 × 494 240 478 = 494 240 4782 = 244 273 650 093 668 480.
As a consequence, 494 240 478 is the square root of 244 273 650 093 668 480.
494 240 478 is a number with 9 digits.
The multiples of 494 240 478 are all integers evenly divisible by 494 240 478, that is all numbers such that the remainder of the division by 494 240 478 is zero. There are infinitely many multiples of 494 240 478. The smallest multiples of 494 240 478 are: