389657085 has 32 divisors (see below), whose sum is σ = 666340992. Its totient is φ = 193751040.

The previous prime is 389657083. The next prime is 389657087. The reversal of 389657085 is 580756983.

It is an interprime number because it is at equal distance from previous prime (389657083) and next prime (389657087).

It is not a de Polignac number, because 389657085 - 2¹ = 389657083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389657083) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 20145 + ... + 34425.

It is an arithmetic number, because the mean of its divisors is an integer number (20823156).

Almost surely, 2^389657085 is an apocalyptic number.

It is an amenable number.

389657085 is a deficient number, since it is larger than the sum of its proper divisors (276683907).

389657085 is a wasteful number, since it uses less digits than its factorization.

389657085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14413.

The product of its (nonzero) digits is 1814400, while the sum is 51.

The square root of 389657085 is about 19739.7336608172. The cubic root of 389657085 is about 730.4001590400.

The spelling of 389657085 in words is "three hundred eighty-nine million, six hundred fifty-seven thousand, eighty-five".