389231684 has 6 divisors (see below), whose sum is σ = 681155454. Its totient is φ = 194615840.

The previous prime is 389231683. The next prime is 389231729. The reversal of 389231684 is 486132983.

It can be written as a sum of positive squares in only one way, i.e., 345142084 + 44089600 = 18578^2 + 6640^2 .

It is not an unprimeable number, because it can be changed into a prime (389231683) 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 as a sum of consecutive naturals, namely, 48653957 + ... + 48653964.

It is an arithmetic number, because the mean of its divisors is an integer number (113525909).

Almost surely, 2^389231684 is an apocalyptic number.

It is an amenable number.

389231684 is a deficient number, since it is larger than the sum of its proper divisors (291923770).

389231684 is a wasteful number, since it uses less digits than its factorization.

389231684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97307925 (or 97307923 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 389231684 is about 19728.9554715905. The cubic root of 389231684 is about 730.1342619128.

The spelling of 389231684 in words is "three hundred eighty-nine million, two hundred thirty-one thousand, six hundred eighty-four".