394393204 has 6 divisors (see below), whose sum is σ = 690188114. Its totient is φ = 197196600.

The previous prime is 394393199. The next prime is 394393211. The reversal of 394393204 is 402393493.

It can be written as a sum of positive squares in only one way, i.e., 264387600 + 130005604 = 16260^2 + 11402^2 .

It is a super-2 number, since 2×394393204² = 311091998722771232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49299147 + ... + 49299154.

Almost surely, 2^394393204 is an apocalyptic number.

It is an amenable number.

394393204 is a deficient number, since it is larger than the sum of its proper divisors (295794910).

394393204 is a wasteful number, since it uses less digits than its factorization.

394393204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98598305 (or 98598303 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 37.

The square root of 394393204 is about 19859.3354370180. The cubic root of 394393204 is about 733.3474861364.

The spelling of 394393204 in words is "three hundred ninety-four million, three hundred ninety-three thousand, two hundred four".