389388807 has 12 divisors (see below), whose sum is σ = 562786224. Its totient is φ = 259437600.

The previous prime is 389388787. The next prime is 389388809. The reversal of 389388807 is 708883983.

It is a happy number.

It is not a de Polignac number, because 389388807 - 2⁶ = 389388743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389388809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4198 + ... + 28220.

It is an arithmetic number, because the mean of its divisors is an integer number (46898852).

Almost surely, 2^389388807 is an apocalyptic number.

389388807 is a deficient number, since it is larger than the sum of its proper divisors (173397417).

389388807 is a wasteful number, since it uses less digits than its factorization.

389388807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25830 (or 25827 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The square root of 389388807 is about 19732.9371103239. The cubic root of 389388807 is about 730.2324942829.

The spelling of 389388807 in words is "three hundred eighty-nine million, three hundred eighty-eight thousand, eight hundred seven".