1439321768 has 16 divisors (see below), whose sum is σ = 2702371680. Its totient is φ = 718689328.

The previous prime is 1439321743. The next prime is 1439321791. The reversal of 1439321768 is 8671239341.

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, 115130 + ... + 127017.

It is an arithmetic number, because the mean of its divisors is an integer number (168898230).

Almost surely, 2^1439321768 is an apocalyptic number.

It is an amenable number.

1439321768 is a deficient number, since it is larger than the sum of its proper divisors (1263049912).

1439321768 is a wasteful number, since it uses less digits than its factorization.

1439321768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242896 (or 242892 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 1439321768 is about 37938.3943782549. The cubic root of 1439321768 is about 1129.0659177192.

The spelling of 1439321768 in words is "one billion, four hundred thirty-nine million, three hundred twenty-one thousand, seven hundred sixty-eight".