389872085 has 16 divisors (see below), whose sum is σ = 486311040. Its totient is φ = 299691840.

The previous prime is 389872079. The next prime is 389872111. The reversal of 389872085 is 580278983.

It is not a de Polignac number, because 389872085 - 2²⁰ = 388823509 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 24224 + ... + 36966.

It is an arithmetic number, because the mean of its divisors is an integer number (30394440).

Almost surely, 2^389872085 is an apocalyptic number.

It is an amenable number.

389872085 is a deficient number, since it is larger than the sum of its proper divisors (96438955).

389872085 is a wasteful number, since it uses less digits than its factorization.

389872085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12988.

The product of its (nonzero) digits is 967680, while the sum is 50.

The square root of 389872085 is about 19745.1787786285. The cubic root of 389872085 is about 730.5344712910.

The spelling of 389872085 in words is "three hundred eighty-nine million, eight hundred seventy-two thousand, eighty-five".