394438 has 8 divisors (see below), whose sum is σ = 645480. Its totient is φ = 179280.

The previous prime is 394411. The next prime is 394453. The reversal of 394438 is 834493.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8943 + ... + 8986.

It is an arithmetic number, because the mean of its divisors is an integer number (80685).

2³⁹⁴⁴³⁸ is an apocalyptic number.

394438 is a deficient number, since it is larger than the sum of its proper divisors (251042).

394438 is a wasteful number, since it uses less digits than its factorization.

394438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17942.

The product of its digits is 10368, while the sum is 31.

The square root of 394438 is about 628.0429921590. The cubic root of 394438 is about 73.3375250129.

The spelling of 394438 in words is "three hundred ninety-four thousand, four hundred thirty-eight".