389955644 has 12 divisors (see below), whose sum is σ = 734916504. Its totient is φ = 179979504.

The previous prime is 389955619. The next prime is 389955649. The reversal of 389955644 is 446559983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389955649) 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, 3749522 + ... + 3749625.

It is an arithmetic number, because the mean of its divisors is an integer number (61243042).

Almost surely, 2^389955644 is an apocalyptic number.

It is an amenable number.

389955644 is a deficient number, since it is larger than the sum of its proper divisors (344960860).

389955644 is a wasteful number, since it uses less digits than its factorization.

389955644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7499164 (or 7499162 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 53.

The square root of 389955644 is about 19747.2945995141. The cubic root of 389955644 is about 730.5866579541.

The spelling of 389955644 in words is "three hundred eighty-nine million, nine hundred fifty-five thousand, six hundred forty-four".