394636 has 12 divisors (see below), whose sum is σ = 753480. Its totient is φ = 179360.

The previous prime is 394633. The next prime is 394637. The reversal of 394636 is 636493.

It is a junction number, because it is equal to n+sod(n) for n = 394598 and 394607.

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

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, 4441 + ... + 4528.

It is an arithmetic number, because the mean of its divisors is an integer number (62790).

2³⁹⁴⁶³⁶ is an apocalyptic number.

It is an amenable number.

394636 is a deficient number, since it is larger than the sum of its proper divisors (358844).

394636 is a wasteful number, since it uses less digits than its factorization.

394636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8984 (or 8982 counting only the distinct ones).

The product of its digits is 11664, while the sum is 31.

The square root of 394636 is about 628.2006049026. The cubic root of 394636 is about 73.3497942846.

The spelling of 394636 in words is "three hundred ninety-four thousand, six hundred thirty-six".