389564418 has 16 divisors (see below), whose sum is σ = 824960160. Its totient is φ = 122216256.

The previous prime is 389564393. The next prime is 389564431. The reversal of 389564418 is 814465983.

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, 1909528 + ... + 1909731.

It is an arithmetic number, because the mean of its divisors is an integer number (51560010).

Almost surely, 2^389564418 is an apocalyptic number.

389564418 is an abundant number, since it is smaller than the sum of its proper divisors (435395742).

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

389564418 is a wasteful number, since it uses less digits than its factorization.

389564418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3819281.

The product of its digits is 829440, while the sum is 48.

The square root of 389564418 is about 19737.3863011291. The cubic root of 389564418 is about 730.3422539740.

The spelling of 389564418 in words is "three hundred eighty-nine million, five hundred sixty-four thousand, four hundred eighteen".