394591 has 4 divisors (see below), whose sum is σ = 396792. Its totient is φ = 392392.

The previous prime is 394579. The next prime is 394601. The reversal of 394591 is 195493.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 394591 - 2¹¹ = 392543 is a prime.

It is a Duffinian number.

394591 is a modest number, since divided by 591 gives 394 as remainder.

394591 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805 + ... + 1198.

It is an arithmetic number, because the mean of its divisors is an integer number (99198).

2³⁹⁴⁵⁹¹ is an apocalyptic number.

394591 is a deficient number, since it is larger than the sum of its proper divisors (2201).

394591 is a wasteful number, since it uses less digits than its factorization.

394591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2200.

The product of its digits is 4860, while the sum is 31.

The square root of 394591 is about 628.1647872971. The cubic root of 394591 is about 73.3470061742.

The spelling of 394591 in words is "three hundred ninety-four thousand, five hundred ninety-one".