384630857 has 16 divisors (see below), whose sum is σ = 442337280. Its totient is φ = 331732800.

The previous prime is 384630839. The next prime is 384630859. The reversal of 384630857 is 758036483.

It is a cyclic number.

It is not a de Polignac number, because 384630857 - 2⁶ = 384630793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384630859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4769 + ... + 28142.

It is an arithmetic number, because the mean of its divisors is an integer number (27646080).

Almost surely, 2^384630857 is an apocalyptic number.

It is an amenable number.

384630857 is a deficient number, since it is larger than the sum of its proper divisors (57706423).

384630857 is a wasteful number, since it uses less digits than its factorization.

384630857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32984.

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 384630857 is about 19612.0079798067. The cubic root of 384630857 is about 727.2460552089.

The spelling of 384630857 in words is "three hundred eighty-four million, six hundred thirty thousand, eight hundred fifty-seven".