389230812 has 24 divisors (see below), whose sum is σ = 1009117200. Its totient is φ = 129743568.

The previous prime is 389230801. The next prime is 389230819. The reversal of 389230812 is 218032983.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389230819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1801887 + ... + 1802102.

It is an arithmetic number, because the mean of its divisors is an integer number (42046550).

Almost surely, 2^389230812 is an apocalyptic number.

It is an amenable number.

389230812 is an abundant number, since it is smaller than the sum of its proper divisors (619886388).

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

389230812 is a wasteful number, since it uses less digits than its factorization.

389230812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3604002 (or 3603994 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 389230812 is about 19728.9333720807. The cubic root of 389230812 is about 730.1337166698.

The spelling of 389230812 in words is "three hundred eighty-nine million, two hundred thirty thousand, eight hundred twelve".