389933694 has 24 divisors (see below), whose sum is σ = 889323240. Its totient is φ = 123136848.

The previous prime is 389933689. The next prime is 389933699. The reversal of 389933694 is 496339983.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (389933689) and next prime (389933699).

It is a self number, because there is not a number n which added to its sum of digits gives 389933694.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389933699) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 569737 + ... + 570420.

It is an arithmetic number, because the mean of its divisors is an integer number (37055135).

Almost surely, 2^389933694 is an apocalyptic number.

389933694 is an abundant number, since it is smaller than the sum of its proper divisors (499389546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389933694 is a wasteful number, since it uses less digits than its factorization.

389933694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140184 (or 1140181 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 54.

The square root of 389933694 is about 19746.7388193595. The cubic root of 389933694 is about 730.5729498326.

The spelling of 389933694 in words is "three hundred eighty-nine million, nine hundred thirty-three thousand, six hundred ninety-four".