Is 1400 a prime number?

1 400 is an even number, because it is evenly divisible by 2: 1 400 / 2 = 700.

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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 1 400 is about 37.417.

Thus, the square root of 1 400 is not an integer, and therefore 1 400 is not a square number.

The square of a number (here 1 400) is the result of the product of this number (1 400) by itself (i.e., 1 400 × 1 400); the square of 1 400 is sometimes called "raising 1 400 to the power 2", or "1 400 squared".

The square of 1 400 is 1 960 000 because 1 400 × 1 400 = 1 400² = 1 960 000.

As a consequence, 1 400 is the square root of 1 960 000.

1 400 is a number with 4 digits.

The multiples of 1 400 are all integers evenly divisible by 1 400, that is all numbers such that the remainder of the division by 1 400 is zero. There are infinitely many multiples of 1 400. The smallest multiples of 1 400 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 1 400 too, since 0 × 1 400 = 0
• 1 400: indeed, 1 400 is a multiple of itself, since 1 400 is evenly divisible by 1 400 (we have 1 400 / 1 400 = 1, so the remainder of this division is indeed zero)
• 2 800: indeed, 2 800 = 1 400 × 2
• 4 200: indeed, 4 200 = 1 400 × 3
• 5 600: indeed, 5 600 = 1 400 × 4
• 7 000: indeed, 7 000 = 1 400 × 5
• etc.

• Preceding numbers: …1 398, 1 399
• Following numbers: 1 401, 1 402…

Nearest numbers from 1 400

• Preceding prime number: 1 399
• Following prime number: 1 409

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• 1 400 est-il un nombre premier ?