389329808 has 20 divisors (see below), whose sum is σ = 862087680. Its totient is φ = 166855584.

The previous prime is 389329781. The next prime is 389329823. The reversal of 389329808 is 808923983.

It is a happy number.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

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, 1737968 + ... + 1738191.

It is an arithmetic number, because the mean of its divisors is an integer number (43104384).

Almost surely, 2^389329808 is an apocalyptic number.

It is an amenable number.

389329808 is an abundant number, since it is smaller than the sum of its proper divisors (472757872).

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

389329808 is a wasteful number, since it uses less digits than its factorization.

389329808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3476174 (or 3476168 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 50.

The square root of 389329808 is about 19731.4421165813. The cubic root of 389329808 is about 730.1956115560.

The spelling of 389329808 in words is "three hundred eighty-nine million, three hundred twenty-nine thousand, eight hundred eight".