Is 9721 a prime number?

9 721 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 9 721 is about 98.595.

Thus, the square root of 9 721 is not an integer, and therefore 9 721 is not a square number.

Anyway, 9 721 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 9 721) is the result of the product of this number (9 721) by itself (i.e., 9 721 × 9 721); the square of 9 721 is sometimes called "raising 9 721 to the power 2", or "9 721 squared".

The square of 9 721 is 94 497 841 because 9 721 × 9 721 = 9 721² = 94 497 841.

As a consequence, 9 721 is the square root of 94 497 841.

9 721 is a number with 4 digits.

The multiples of 9 721 are all integers evenly divisible by 9 721, that is all numbers such that the remainder of the division by 9 721 is zero. There are infinitely many multiples of 9 721. The smallest multiples of 9 721 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 9 721 too, since 0 × 9 721 = 0
• 9 721: indeed, 9 721 is a multiple of itself, since 9 721 is evenly divisible by 9 721 (we have 9 721 / 9 721 = 1, so the remainder of this division is indeed zero)
• 19 442: indeed, 19 442 = 9 721 × 2
• 29 163: indeed, 29 163 = 9 721 × 3
• 38 884: indeed, 38 884 = 9 721 × 4
• 48 605: indeed, 48 605 = 9 721 × 5
• etc.

• Preceding numbers: …9 719, 9 720
• Following numbers: 9 722, 9 723…

Nearest numbers from 9 721

• Preceding prime number: 9 719
• Following prime number: 9 733

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• 9 721 est-il un nombre premier ?