839689768 has 8 divisors (see below), whose sum is σ = 1574418330. Its totient is φ = 419844880.

The previous prime is 839689723. The next prime is 839689769. The reversal of 839689768 is 867986938.

It can be written as a sum of positive squares in only one way, i.e., 831860964 + 7828804 = 28842^2 + 2798^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (839689769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52480603 + ... + 52480618.

Almost surely, 2^839689768 is an apocalyptic number.

It is an amenable number.

839689768 is a deficient number, since it is larger than the sum of its proper divisors (734728562).

839689768 is a wasteful number, since it uses less digits than its factorization.

839689768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104961227 (or 104961223 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 64.

The square root of 839689768 is about 28977.4009876662. The cubic root of 839689768 is about 943.4226246463.

The spelling of 839689768 in words is "eight hundred thirty-nine million, six hundred eighty-nine thousand, seven hundred sixty-eight".