394786924 has 18 divisors (see below), whose sum is σ = 803673780. Its totient is φ = 169194312.

The previous prime is 394786907. The next prime is 394786939. The reversal of 394786924 is 429687493.

It is a happy number.

It is a super-2 number, since 2×394786924² = 311713430722763552, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1006914 + ... + 1007305.

Almost surely, 2^394786924 is an apocalyptic number.

It is an amenable number.

394786924 is an abundant number, since it is smaller than the sum of its proper divisors (408886856).

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

394786924 is a wasteful number, since it uses less digits than its factorization.

394786924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014237 (or 2014228 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 52.

The square root of 394786924 is about 19869.2456827128. The cubic root of 394786924 is about 733.5914368792.

The spelling of 394786924 in words is "three hundred ninety-four million, seven hundred eighty-six thousand, nine hundred twenty-four".