Is 398721007 a prime number?

398 721 007 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 398 721 007 is about 19 968.000.

Thus, the square root of 398 721 007 is not an integer, and therefore 398 721 007 is not a square number.

Anyway, 398 721 007 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 398 721 007) is the result of the product of this number (398 721 007) by itself (i.e., 398 721 007 × 398 721 007); the square of 398 721 007 is sometimes called "raising 398 721 007 to the power 2", or "398 721 007 squared".

The square of 398 721 007 is 158 978 441 423 094 048 because 398 721 007 × 398 721 007 = 398 721 007² = 158 978 441 423 094 048.

As a consequence, 398 721 007 is the square root of 158 978 441 423 094 048.

398 721 007 is a number with 9 digits.

The multiples of 398 721 007 are all integers evenly divisible by 398 721 007, that is all numbers such that the remainder of the division by 398 721 007 is zero. There are infinitely many multiples of 398 721 007. The smallest multiples of 398 721 007 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 398 721 007 too, since 0 × 398 721 007 = 0
• 398 721 007: indeed, 398 721 007 is a multiple of itself, since 398 721 007 is evenly divisible by 398 721 007 (we have 398 721 007 / 398 721 007 = 1, so the remainder of this division is indeed zero)
• 797 442 014: indeed, 797 442 014 = 398 721 007 × 2
• 1 196 163 021: indeed, 1 196 163 021 = 398 721 007 × 3
• 1 594 884 028: indeed, 1 594 884 028 = 398 721 007 × 4
• 1 993 605 035: indeed, 1 993 605 035 = 398 721 007 × 5
• etc.

• Preceding numbers: …398 721 005, 398 721 006
• Following numbers: 398 721 008, 398 721 009…

Nearest numbers from 398 721 007

• Preceding prime number: 398 720 981
• Following prime number: 398 721 013

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• 398 721 007 est-il un nombre premier ?