389509268 has 12 divisors (see below), whose sum is σ = 693194880. Its totient is φ = 191453592.

The previous prime is 389509247. The next prime is 389509271. The reversal of 389509268 is 862905983.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 824996 + ... + 825467.

It is an arithmetic number, because the mean of its divisors is an integer number (57766240).

Almost surely, 2^389509268 is an apocalyptic number.

It is an amenable number.

389509268 is a deficient number, since it is larger than the sum of its proper divisors (303685612).

389509268 is a wasteful number, since it uses less digits than its factorization.

389509268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650526 (or 1650524 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 50.

The square root of 389509268 is about 19735.9891568677. The cubic root of 389509268 is about 730.3077878931.

The spelling of 389509268 in words is "three hundred eighty-nine million, five hundred nine thousand, two hundred sixty-eight".