389824666 has 32 divisors (see below), whose sum is σ = 734307840. Its totient is φ = 150778800.

The previous prime is 389824663. The next prime is 389824703. The reversal of 389824666 is 666428983.

It is not an unprimeable number, because it can be changed into a prime (389824661) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12301 + ... + 30511.

It is an arithmetic number, because the mean of its divisors is an integer number (22947120).

Almost surely, 2^389824666 is an apocalyptic number.

389824666 is a deficient number, since it is larger than the sum of its proper divisors (344483174).

389824666 is a wasteful number, since it uses less digits than its factorization.

389824666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18370.

The product of its digits is 2985984, while the sum is 52.

The square root of 389824666 is about 19743.9779679780. The cubic root of 389824666 is about 730.5048525006.

The spelling of 389824666 in words is "three hundred eighty-nine million, eight hundred twenty-four thousand, six hundred sixty-six".