394811128 has 16 divisors (see below), whose sum is σ = 783816480. Its totient is φ = 185793408.

The previous prime is 394811113. The next prime is 394811141. The reversal of 394811128 is 821118493.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1451376 + ... + 1451647.

It is an arithmetic number, because the mean of its divisors is an integer number (48988530).

Almost surely, 2^394811128 is an apocalyptic number.

It is an amenable number.

394811128 is a deficient number, since it is larger than the sum of its proper divisors (389005352).

394811128 is a wasteful number, since it uses less digits than its factorization.

394811128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2903046 (or 2903042 counting only the distinct ones).

The product of its digits is 13824, while the sum is 37.

The square root of 394811128 is about 19869.8547553826. The cubic root of 394811128 is about 733.6064284973.

The spelling of 394811128 in words is "three hundred ninety-four million, eight hundred eleven thousand, one hundred twenty-eight".