389133646 has 8 divisors (see below), whose sum is σ = 636764184. Its totient is φ = 176878920.

The previous prime is 389133637. The next prime is 389133653. The reversal of 389133646 is 646331983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 8843925 + ... + 8843968.

It is an arithmetic number, because the mean of its divisors is an integer number (79595523).

Almost surely, 2^389133646 is an apocalyptic number.

389133646 is a deficient number, since it is larger than the sum of its proper divisors (247630538).

389133646 is a wasteful number, since it uses less digits than its factorization.

389133646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17687906.

The product of its digits is 279936, while the sum is 43.

The square root of 389133646 is about 19726.4706929547. The cubic root of 389133646 is about 730.0729557411.

The spelling of 389133646 in words is "three hundred eighty-nine million, one hundred thirty-three thousand, six hundred forty-six".