389798646 has 16 divisors (see below), whose sum is σ = 786884544. Its totient is φ = 128718344.

The previous prime is 389798621. The next prime is 389798653. The reversal of 389798646 is 646897983.

It is a self number, because there is not a number n which added to its sum of digits gives 389798646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302940 + ... + 304223.

It is an arithmetic number, because the mean of its divisors is an integer number (49180284).

Almost surely, 2^389798646 is an apocalyptic number.

389798646 is an abundant number, since it is smaller than the sum of its proper divisors (397085898).

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

389798646 is a wasteful number, since it uses less digits than its factorization.

389798646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607275.

The product of its digits is 15676416, while the sum is 60.

The square root of 389798646 is about 19743.3190218869. The cubic root of 389798646 is about 730.4885989035.

The spelling of 389798646 in words is "three hundred eighty-nine million, seven hundred ninety-eight thousand, six hundred forty-six".