389831672 has 8 divisors (see below), whose sum is σ = 730934400. Its totient is φ = 194915832.

The previous prime is 389831671. The next prime is 389831681. The reversal of 389831672 is 276138983.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389831671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24364472 + ... + 24364487.

It is an arithmetic number, because the mean of its divisors is an integer number (91366800).

Almost surely, 2^389831672 is an apocalyptic number.

It is an amenable number.

389831672 is a deficient number, since it is larger than the sum of its proper divisors (341102728).

389831672 is a wasteful number, since it uses less digits than its factorization.

389831672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48728965 (or 48728961 counting only the distinct ones).

The product of its digits is 435456, while the sum is 47.

The square root of 389831672 is about 19744.1553883675. The cubic root of 389831672 is about 730.5092287299.

The spelling of 389831672 in words is "three hundred eighty-nine million, eight hundred thirty-one thousand, six hundred seventy-two".