Is 394 a prime number? What are the divisors of 394?

Parity of 394

394 is an even number, because it is evenly divisible by 2: 394 / 2 = 197.

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Is 394 a perfect square 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 394 is about 19.849.

Thus, the square root of 394 is not an integer, and therefore 394 is not a square number.

What is the square number of 394?

The square of a number (here 394) is the result of the product of this number (394) by itself (i.e., 394 × 394); the square of 394 is sometimes called "raising 394 to the power 2", or "394 squared".

The square of 394 is 155 236 because 394 × 394 = 3942 = 155 236.

As a consequence, 394 is the square root of 155 236.

Number of digits of 394

394 is a number with 3 digits.

What are the multiples of 394?

The multiples of 394 are all integers evenly divisible by 394, that is all numbers such that the remainder of the division by 394 is zero. There are infinitely many multiples of 394. The smallest multiples of 394 are:

How to determine whether an integer is a prime number?

To determine the primality of a number, several algorithms can be used. The most naive technique is to test all divisors strictly smaller to the number of which we want to determine the primality (here 394). First, we can eliminate all even numbers greater than 2 (and hence 4, 6, 8…). Then, we can stop this check when we reach the square root of the number of which we want to determine the primality (here the square root is about 19.849). Historically, the sieve of Eratosthenes (dating from the Greek mathematics) implements this technique in a relatively efficient manner.

More modern techniques include the sieve of Atkin, probabilistic algorithms, and the cyclotomic AKS test.

Numbers near 394

  • Preceding numbers: …392, 393
  • Following numbers: 395, 396

Nearest numbers from 394

  • Preceding prime number: 389
  • Following prime number: 397
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