Is 400004 a prime number?

400 004 is an even number, because it is evenly divisible by 2: 400 004 / 2 = 200 002.

Find out more:

• 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 400 004 is about 632.459.

Thus, the square root of 400 004 is not an integer, and therefore 400 004 is not a square number.

The square of a number (here 400 004) is the result of the product of this number (400 004) by itself (i.e., 400 004 × 400 004); the square of 400 004 is sometimes called "raising 400 004 to the power 2", or "400 004 squared".

The square of 400 004 is 160 003 200 016 because 400 004 × 400 004 = 400 004² = 160 003 200 016.

As a consequence, 400 004 is the square root of 160 003 200 016.

400 004 is a number with 6 digits.

The multiples of 400 004 are all integers evenly divisible by 400 004, that is all numbers such that the remainder of the division by 400 004 is zero. There are infinitely many multiples of 400 004. The smallest multiples of 400 004 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 400 004 too, since 0 × 400 004 = 0
• 400 004: indeed, 400 004 is a multiple of itself, since 400 004 is evenly divisible by 400 004 (we have 400 004 / 400 004 = 1, so the remainder of this division is indeed zero)
• 800 008: indeed, 800 008 = 400 004 × 2
• 1 200 012: indeed, 1 200 012 = 400 004 × 3
• 1 600 016: indeed, 1 600 016 = 400 004 × 4
• 2 000 020: indeed, 2 000 020 = 400 004 × 5
• etc.

• Preceding numbers: …400 002, 400 003
• Following numbers: 400 005, 400 006…

Nearest numbers from 400 004

• Preceding prime number: 399 989
• Following prime number: 400 009

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• 400 004 est-il un nombre premier ?