394500057 has 16 divisors (see below), whose sum is σ = 601420800. Its totient is φ = 225324432.

The previous prime is 394500053. The next prime is 394500061. The reversal of 394500057 is 750005493.

It is an interprime number because it is at equal distance from previous prime (394500053) and next prime (394500061).

It is not a de Polignac number, because 394500057 - 2² = 394500053 is a prime.

It is not an unprimeable number, because it can be changed into a prime (394500053) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 83788 + ... + 88370.

It is an arithmetic number, because the mean of its divisors is an integer number (37588800).

Almost surely, 2^394500057 is an apocalyptic number.

It is an amenable number.

394500057 is a deficient number, since it is larger than the sum of its proper divisors (206920743).

394500057 is a wasteful number, since it uses less digits than its factorization.

394500057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8692.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 394500057 is about 19862.0255009402. The cubic root of 394500057 is about 733.4137087982.

The spelling of 394500057 in words is "three hundred ninety-four million, five hundred thousand, fifty-seven".