389396855 has 8 divisors (see below), whose sum is σ = 474936864. Its totient is φ = 306410400.

The previous prime is 389396801. The next prime is 389396869. The reversal of 389396855 is 558693983.

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

It is a de Polignac number, because none of the positive numbers 2^k-389396855 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 389396855.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638051 + ... + 638660.

It is an arithmetic number, because the mean of its divisors is an integer number (59367108).

Almost surely, 2^389396855 is an apocalyptic number.

389396855 is a deficient number, since it is larger than the sum of its proper divisors (85540009).

389396855 is a wasteful number, since it uses less digits than its factorization.

389396855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276777.

The product of its digits is 6998400, while the sum is 56.

The square root of 389396855 is about 19733.1410322837. The cubic root of 389396855 is about 730.2375251334.

The spelling of 389396855 in words is "three hundred eighty-nine million, three hundred ninety-six thousand, eight hundred fifty-five".