389665055 has 8 divisors (see below), whose sum is σ = 503567232. Its totient is φ = 287752608.

The previous prime is 389665049. The next prime is 389665069. The reversal of 389665055 is 550566983.

It is a happy number.

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

It is not a de Polignac number, because 389665055 - 2⁶ = 389664991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2997359 + ... + 2997488.

It is an arithmetic number, because the mean of its divisors is an integer number (62945904).

Almost surely, 2^389665055 is an apocalyptic number.

389665055 is a deficient number, since it is larger than the sum of its proper divisors (113902177).

389665055 is a wasteful number, since it uses less digits than its factorization.

389665055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5994865.

The product of its (nonzero) digits is 972000, while the sum is 47.

The square root of 389665055 is about 19739.9355368755. The cubic root of 389665055 is about 730.4051388456.

The spelling of 389665055 in words is "three hundred eighty-nine million, six hundred sixty-five thousand, fifty-five".