389004780 has 24 divisors (see below), whose sum is σ = 1089213552. Its totient is φ = 103734592.

The previous prime is 389004779. The next prime is 389004821. The reversal of 389004780 is 87400983.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 3241647 + ... + 3241766.

It is an arithmetic number, because the mean of its divisors is an integer number (45383898).

Almost surely, 2^389004780 is an apocalyptic number.

389004780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

389004780 is an abundant number, since it is smaller than the sum of its proper divisors (700208772).

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

389004780 is a wasteful number, since it uses less digits than its factorization.

389004780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6483425 (or 6483423 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 389004780 is about 19723.2041007540. The cubic root of 389004780 is about 729.9923562094.

The spelling of 389004780 in words is "three hundred eighty-nine million, four thousand, seven hundred eighty".