Is 401987 a prime number?

401 987 is an odd number, because it is not evenly divisible by 2.

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• What is an even number?

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 401 987 is about 634.024.

Thus, the square root of 401 987 is not an integer, and therefore 401 987 is not a square number.

Anyway, 401 987 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 401 987) is the result of the product of this number (401 987) by itself (i.e., 401 987 × 401 987); the square of 401 987 is sometimes called "raising 401 987 to the power 2", or "401 987 squared".

The square of 401 987 is 161 593 548 169 because 401 987 × 401 987 = 401 987² = 161 593 548 169.

As a consequence, 401 987 is the square root of 161 593 548 169.

401 987 is a number with 6 digits.

The multiples of 401 987 are all integers evenly divisible by 401 987, that is all numbers such that the remainder of the division by 401 987 is zero. There are infinitely many multiples of 401 987. The smallest multiples of 401 987 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 401 987 too, since 0 × 401 987 = 0
• 401 987: indeed, 401 987 is a multiple of itself, since 401 987 is evenly divisible by 401 987 (we have 401 987 / 401 987 = 1, so the remainder of this division is indeed zero)
• 803 974: indeed, 803 974 = 401 987 × 2
• 1 205 961: indeed, 1 205 961 = 401 987 × 3
• 1 607 948: indeed, 1 607 948 = 401 987 × 4
• 2 009 935: indeed, 2 009 935 = 401 987 × 5
• etc.

• Preceding numbers: …401 985, 401 986
• Following numbers: 401 988, 401 989…

Nearest numbers from 401 987

• Preceding prime number: 401 981
• Following prime number: 401 993

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• 401 987 est-il un nombre premier ?