Is 987491 a prime number?

987 491 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 987 491 is about 993.726.

Thus, the square root of 987 491 is not an integer, and therefore 987 491 is not a square number.

Anyway, 987 491 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 987 491) is the result of the product of this number (987 491) by itself (i.e., 987 491 × 987 491); the square of 987 491 is sometimes called "raising 987 491 to the power 2", or "987 491 squared".

The square of 987 491 is 975 138 475 081 because 987 491 × 987 491 = 987 491² = 975 138 475 081.

As a consequence, 987 491 is the square root of 975 138 475 081.

987 491 is a number with 6 digits.

The multiples of 987 491 are all integers evenly divisible by 987 491, that is all numbers such that the remainder of the division by 987 491 is zero. There are infinitely many multiples of 987 491. The smallest multiples of 987 491 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 987 491 too, since 0 × 987 491 = 0
• 987 491: indeed, 987 491 is a multiple of itself, since 987 491 is evenly divisible by 987 491 (we have 987 491 / 987 491 = 1, so the remainder of this division is indeed zero)
• 1 974 982: indeed, 1 974 982 = 987 491 × 2
• 2 962 473: indeed, 2 962 473 = 987 491 × 3
• 3 949 964: indeed, 3 949 964 = 987 491 × 4
• 4 937 455: indeed, 4 937 455 = 987 491 × 5
• etc.

• Preceding numbers: …987 489, 987 490
• Following numbers: 987 492, 987 493…

Nearest numbers from 987 491

• Preceding prime number: 987 473
• Following prime number: 987 509