389146925 has 12 divisors (see below), whose sum is σ = 483612276. Its totient is φ = 310627200.

The previous prime is 389146903. The next prime is 389146931. The reversal of 389146925 is 529641983.

It can be written as a sum of positive squares in 6 ways, for example, as 39980329 + 349166596 = 6323^2 + 18686^2 .

It is not a de Polignac number, because 389146925 - 2²⁶ = 322038061 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 389146925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5606 + ... + 28455.

It is an arithmetic number, because the mean of its divisors is an integer number (40301023).

Almost surely, 2^389146925 is an apocalyptic number.

It is an amenable number.

389146925 is a deficient number, since it is larger than the sum of its proper divisors (94465351).

389146925 is a wasteful number, since it uses less digits than its factorization.

389146925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34528 (or 34523 counting only the distinct ones).

The product of its digits is 466560, while the sum is 47.

The square root of 389146925 is about 19726.8072682834. The cubic root of 389146925 is about 730.0812601104.

The spelling of 389146925 in words is "three hundred eighty-nine million, one hundred forty-six thousand, nine hundred twenty-five".