394639244 has 24 divisors (see below), whose sum is σ = 721859040. Its totient is φ = 188422784.

The previous prime is 394639243. The next prime is 394639303. The reversal of 394639244 is 442936493.

It is a junction number, because it is equal to n+sod(n) for n = 394639195 and 394639204.

It is not an unprimeable number, because it can be changed into a prime (394639243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56792 + ... + 63360.

It is an arithmetic number, because the mean of its divisors is an integer number (30077460).

Almost surely, 2^394639244 is an apocalyptic number.

It is an amenable number.

394639244 is a deficient number, since it is larger than the sum of its proper divisors (327219796).

394639244 is a wasteful number, since it uses less digits than its factorization.

394639244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7249 (or 7247 counting only the distinct ones).

The product of its digits is 559872, while the sum is 44.

The square root of 394639244 is about 19865.5290390163. The cubic root of 394639244 is about 733.4999526816.

The spelling of 394639244 in words is "three hundred ninety-four million, six hundred thirty-nine thousand, two hundred forty-four".