Is 80409 a prime number?

80 409 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 80 409 is about 283.565.

Thus, the square root of 80 409 is not an integer, and therefore 80 409 is not a square number.

The square of a number (here 80 409) is the result of the product of this number (80 409) by itself (i.e., 80 409 × 80 409); the square of 80 409 is sometimes called "raising 80 409 to the power 2", or "80 409 squared".

The square of 80 409 is 6 465 607 281 because 80 409 × 80 409 = 80 409² = 6 465 607 281.

As a consequence, 80 409 is the square root of 6 465 607 281.

80 409 is a number with 5 digits.

The multiples of 80 409 are all integers evenly divisible by 80 409, that is all numbers such that the remainder of the division by 80 409 is zero. There are infinitely many multiples of 80 409. The smallest multiples of 80 409 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 80 409 too, since 0 × 80 409 = 0
• 80 409: indeed, 80 409 is a multiple of itself, since 80 409 is evenly divisible by 80 409 (we have 80 409 / 80 409 = 1, so the remainder of this division is indeed zero)
• 160 818: indeed, 160 818 = 80 409 × 2
• 241 227: indeed, 241 227 = 80 409 × 3
• 321 636: indeed, 321 636 = 80 409 × 4
• 402 045: indeed, 402 045 = 80 409 × 5
• etc.

• Preceding numbers: …80 407, 80 408
• Following numbers: 80 410, 80 411…

Nearest numbers from 80 409

• Preceding prime number: 80 407
• Following prime number: 80 429

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• 80 409 est-il un nombre premier ?