394936838 has 8 divisors (see below), whose sum is σ = 611515200. Its totient is φ = 191098440.

The previous prime is 394936823. The next prime is 394936847. The reversal of 394936838 is 838639493.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 394936838.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3184913 + ... + 3185036.

It is an arithmetic number, because the mean of its divisors is an integer number (76439400).

Almost surely, 2^394936838 is an apocalyptic number.

394936838 is a deficient number, since it is larger than the sum of its proper divisors (216578362).

394936838 is a wasteful number, since it uses less digits than its factorization.

394936838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6369982.

The product of its digits is 3359232, while the sum is 53.

The square root of 394936838 is about 19873.0178382650. The cubic root of 394936838 is about 733.6842816540.

The spelling of 394936838 in words is "three hundred ninety-four million, nine hundred thirty-six thousand, eight hundred thirty-eight".