It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 7 489 448 is not a prime number.
For example, 7 489 448 can be divided by 2: 7 489 448 / 2 = 3 744 724.
For 7 489 448 to be a prime number, it would have been required that 7 489 448 has only two divisors, i.e., itself and 1.
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7 489 448 is an even number, because it is evenly divisible by 2: 7 489 448 / 2 = 3 744 724.
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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 7 489 448 is about 2 736.686.
Thus, the square root of 7 489 448 is not an integer, and therefore 7 489 448 is not a square number.
The square of a number (here 7 489 448) is the result of the product of this number (7 489 448) by itself (i.e., 7 489 448 × 7 489 448); the square of 7 489 448 is sometimes called "raising 7 489 448 to the power 2", or "7 489 448 squared".
The square of 7 489 448 is 56 091 831 344 704 because 7 489 448 × 7 489 448 = 7 489 4482 = 56 091 831 344 704.
As a consequence, 7 489 448 is the square root of 56 091 831 344 704.
The multiples of 7 489 448 are all integers evenly divisible by 7 489 448, that is all numbers such that the remainder of the division by 7 489 448 is zero. There are infinitely many multiples of 7 489 448. The smallest multiples of 7 489 448 are: