389856538 has 16 divisors (see below), whose sum is σ = 590219136. Its totient is φ = 193125040.

The previous prime is 389856517. The next prime is 389856539. The reversal of 389856538 is 835658983.

It is not an unprimeable number, because it can be changed into a prime (389856539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105795 + ... + 109417.

It is an arithmetic number, because the mean of its divisors is an integer number (36888696).

Almost surely, 2^389856538 is an apocalyptic number.

389856538 is a deficient number, since it is larger than the sum of its proper divisors (200362598).

389856538 is a wasteful number, since it uses less digits than its factorization.

389856538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4109.

The product of its digits is 6220800, while the sum is 55.

The square root of 389856538 is about 19744.7850836620. The cubic root of 389856538 is about 730.5247606099.

The spelling of 389856538 in words is "three hundred eighty-nine million, eight hundred fifty-six thousand, five hundred thirty-eight".