It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 384 402 is not a prime number.
For example, 384 402 can be divided by 2: 384 402 / 2 = 192 201.
For 384 402 to be a prime number, it would have been required that 384 402 has only two divisors, i.e., itself and 1.
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384 402 is an even number, because it is evenly divisible by 2: 384 402 / 2 = 192 201.
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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 384 402 is about 620.002.
Thus, the square root of 384 402 is not an integer, and therefore 384 402 is not a square number.
The square of a number (here 384 402) is the result of the product of this number (384 402) by itself (i.e., 384 402 × 384 402); the square of 384 402 is sometimes called "raising 384 402 to the power 2", or "384 402 squared".
The square of 384 402 is 147 764 897 604 because 384 402 × 384 402 = 384 4022 = 147 764 897 604.
As a consequence, 384 402 is the square root of 147 764 897 604.
The multiples of 384 402 are all integers evenly divisible by 384 402, that is all numbers such that the remainder of the division by 384 402 is zero. There are infinitely many multiples of 384 402. The smallest multiples of 384 402 are: