394638 has 32 divisors (see below), whose sum is σ = 863136. Its totient is φ = 119808.

The previous prime is 394637. The next prime is 394643. The reversal of 394638 is 836493.

It is a junction number, because it is equal to n+sod(n) for n = 394599 and 394608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5370 + ... + 5442.

It is an arithmetic number, because the mean of its divisors is an integer number (26973).

2³⁹⁴⁶³⁸ is an apocalyptic number.

394638 is an abundant number, since it is smaller than the sum of its proper divisors (468498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

394638 is a wasteful number, since it uses less digits than its factorization.

394638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148.

The product of its digits is 15552, while the sum is 33.

The square root of 394638 is about 628.2021967488. The cubic root of 394638 is about 73.3499181957.

The spelling of 394638 in words is "three hundred ninety-four thousand, six hundred thirty-eight".