389489856 has 112 divisors (see below), whose sum is σ = 1247095296. Its totient is φ = 104730624.

The previous prime is 389489831. The next prime is 389489879. The reversal of 389489856 is 658984983.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 389489856.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14325 + ... + 31371.

Almost surely, 2^389489856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389489856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (623547648).

389489856 is an abundant number, since it is smaller than the sum of its proper divisors (857605440).

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

389489856 is a wasteful number, since it uses less digits than its factorization.

389489856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17086 (or 17076 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 60.

The square root of 389489856 is about 19735.4973588202. The cubic root of 389489856 is about 730.2956555585.

The spelling of 389489856 in words is "three hundred eighty-nine million, four hundred eighty-nine thousand, eight hundred fifty-six".