389396986 has 16 divisors (see below), whose sum is σ = 642216960. Its totient is φ = 175603680.

The previous prime is 389396981. The next prime is 389397037. The reversal of 389396986 is 689693983.

It is not an unprimeable number, because it can be changed into a prime (389396981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66891 + ... + 72478.

It is an arithmetic number, because the mean of its divisors is an integer number (40138560).

Almost surely, 2^389396986 is an apocalyptic number.

389396986 is a deficient number, since it is larger than the sum of its proper divisors (252819974).

389396986 is a wasteful number, since it uses less digits than its factorization.

389396986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139509.

The product of its digits is 15116544, while the sum is 61.

The square root of 389396986 is about 19733.1443515726. The cubic root of 389396986 is about 730.2376070217.

The spelling of 389396986 in words is "three hundred eighty-nine million, three hundred ninety-six thousand, nine hundred eighty-six".