389117672 has 16 divisors (see below), whose sum is σ = 734494500. Its totient is φ = 193252480.

The previous prime is 389117639. The next prime is 389117681. The reversal of 389117672 is 276711983.

It can be written as a sum of positive squares in 2 ways, for example, as 381577156 + 7540516 = 19534^2 + 2746^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162029 + ... + 164412.

Almost surely, 2^389117672 is an apocalyptic number.

It is an amenable number.

389117672 is a deficient number, since it is larger than the sum of its proper divisors (345376828).

389117672 is a wasteful number, since it uses less digits than its factorization.

389117672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326596 (or 326592 counting only the distinct ones).

The product of its digits is 127008, while the sum is 44.

The square root of 389117672 is about 19726.0658013705. The cubic root of 389117672 is about 730.0629657328.

The spelling of 389117672 in words is "three hundred eighty-nine million, one hundred seventeen thousand, six hundred seventy-two".