389919125 has 16 divisors (see below), whose sum is σ = 490192560. Its totient is φ = 309644800.

The previous prime is 389919113. The next prime is 389919139. The reversal of 389919125 is 521919983.

It can be written as a sum of positive squares in 8 ways, for example, as 236728996 + 153190129 = 15386^2 + 12377^2 .

It is not a de Polignac number, because 389919125 - 2⁴ = 389919109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 389919125.

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 15 ways as a sum of consecutive naturals, for example, 5741 + ... + 28509.

It is an arithmetic number, because the mean of its divisors is an integer number (30637035).

Almost surely, 2^389919125 is an apocalyptic number.

It is an amenable number.

389919125 is a deficient number, since it is larger than the sum of its proper divisors (100273435).

389919125 is a wasteful number, since it uses less digits than its factorization.

389919125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22921 (or 22911 counting only the distinct ones).

The product of its digits is 174960, while the sum is 47.

The square root of 389919125 is about 19746.3699195574. The cubic root of 389919125 is about 730.5638509780.

The spelling of 389919125 in words is "three hundred eighty-nine million, nine hundred nineteen thousand, one hundred twenty-five".