It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 438 378 is not a prime number.
For example, 438 378 can be divided by 2: 438 378 / 2 = 219 189.
For 438 378 to be a prime number, it would have been required that 438 378 has only two divisors, i.e., itself and 1.
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438 378 is an even number, because it is evenly divisible by 2: 438 378 / 2 = 219 189.
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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 438 378 is about 662.101.
Thus, the square root of 438 378 is not an integer, and therefore 438 378 is not a square number.
The square of a number (here 438 378) is the result of the product of this number (438 378) by itself (i.e., 438 378 × 438 378); the square of 438 378 is sometimes called "raising 438 378 to the power 2", or "438 378 squared".
The square of 438 378 is 192 175 270 884 because 438 378 × 438 378 = 438 3782 = 192 175 270 884.
As a consequence, 438 378 is the square root of 192 175 270 884.
The multiples of 438 378 are all integers evenly divisible by 438 378, that is all numbers such that the remainder of the division by 438 378 is zero. There are infinitely many multiples of 438 378. The smallest multiples of 438 378 are: