389622784 has 44 divisors (see below), whose sum is σ = 792189000. Its totient is φ = 191479808.

The previous prime is 389622781. The next prime is 389622811. The reversal of 389622784 is 487226983.

It is not an unprimeable number, because it can be changed into a prime (389622781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57192 + ... + 63640.

Almost surely, 2^389622784 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 389622784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (396094500).

389622784 is an abundant number, since it is smaller than the sum of its proper divisors (402566216).

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

389622784 is an equidigital number, since it uses as much as digits as its factorization.

389622784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6528 (or 6510 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 49.

The square root of 389622784 is about 19738.8648103177. The cubic root of 389622784 is about 730.3787263564.

The spelling of 389622784 in words is "three hundred eighty-nine million, six hundred twenty-two thousand, seven hundred eighty-four".