389965684 has 12 divisors (see below), whose sum is σ = 682790500. Its totient is φ = 194882688.

The previous prime is 389965657. The next prime is 389965687. The reversal of 389965684 is 486569983.

It can be written as a sum of positive squares in 2 ways, for example, as 231709284 + 158256400 = 15222^2 + 12580^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389965687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15909 + ... + 32140.

Almost surely, 2^389965684 is an apocalyptic number.

It is an amenable number.

389965684 is a deficient number, since it is larger than the sum of its proper divisors (292824816).

389965684 is a wasteful number, since it uses less digits than its factorization.

389965684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50082 (or 50080 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 58.

The square root of 389965684 is about 19747.5488099156. The cubic root of 389965684 is about 730.5929279211.

The spelling of 389965684 in words is "three hundred eighty-nine million, nine hundred sixty-five thousand, six hundred eighty-four".