389231236 has 6 divisors (see below), whose sum is σ = 681154670. Its totient is φ = 194615616.

The previous prime is 389231233. The next prime is 389231237. The reversal of 389231236 is 632132983.

It can be written as a sum of positive squares in only one way, i.e., 388878400 + 352836 = 19720^2 + 594^2 .

It is a junction number, because it is equal to n+sod(n) for n = 389231195 and 389231204.

It is not an unprimeable number, because it can be changed into a prime (389231233) 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, 48653901 + ... + 48653908.

Almost surely, 2^389231236 is an apocalyptic number.

It is an amenable number.

389231236 is a deficient number, since it is larger than the sum of its proper divisors (291923434).

389231236 is a wasteful number, since it uses less digits than its factorization.

389231236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97307813 (or 97307811 counting only the distinct ones).

The product of its digits is 46656, while the sum is 37.

The square root of 389231236 is about 19728.9441177170. The cubic root of 389231236 is about 730.1339817881.

The spelling of 389231236 in words is "three hundred eighty-nine million, two hundred thirty-one thousand, two hundred thirty-six".