389918336 has 16 divisors (see below), whose sum is σ = 776790690. Its totient is φ = 194959104.

The previous prime is 389918327. The next prime is 389918339. The reversal of 389918336 is 633819983.

It can be written as a sum of positive squares in only one way, i.e., 366492736 + 23425600 = 19144^2 + 4840^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (389918339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1522991 + ... + 1523246.

Almost surely, 2^389918336 is an apocalyptic number.

It is an amenable number.

389918336 is a deficient number, since it is larger than the sum of its proper divisors (386872354).

389918336 is an equidigital number, since it uses as much as digits as its factorization.

389918336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046251 (or 3046239 counting only the distinct ones).

The product of its digits is 839808, while the sum is 50.

The square root of 389918336 is about 19746.3499411917. The cubic root of 389918336 is about 730.5633582132.

The spelling of 389918336 in words is "three hundred eighty-nine million, nine hundred eighteen thousand, three hundred thirty-six".