389031844 has 24 divisors (see below), whose sum is σ = 714688128. Its totient is φ = 184937280.

The previous prime is 389031833. The next prime is 389031887. The reversal of 389031844 is 448130983.

It is a junction number, because it is equal to n+sod(n) for n = 389031797 and 389031806.

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 7 ways as a sum of consecutive naturals, for example, 2704 + ... + 28024.

It is an arithmetic number, because the mean of its divisors is an integer number (29778672).

Almost surely, 2^389031844 is an apocalyptic number.

It is an amenable number.

389031844 is a deficient number, since it is larger than the sum of its proper divisors (325656284).

389031844 is a wasteful number, since it uses less digits than its factorization.

389031844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25515 (or 25513 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 389031844 is about 19723.8901842410. The cubic root of 389031844 is about 730.0092849260.

The spelling of 389031844 in words is "three hundred eighty-nine million, thirty-one thousand, eight hundred forty-four".