769398861 has 16 divisors (see below), whose sum is σ = 1279001088. Its totient is φ = 399687600.

The previous prime is 769398857. The next prime is 769398887. The reversal of 769398861 is 168893967.

769398861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 769398861 - 2² = 769398857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (769398811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1665135 + ... + 1665596.

It is an arithmetic number, because the mean of its divisors is an integer number (79937568).

Almost surely, 2^769398861 is an apocalyptic number.

It is an amenable number.

769398861 is a deficient number, since it is larger than the sum of its proper divisors (509602227).

769398861 is a wasteful number, since it uses less digits than its factorization.

769398861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3330752.

The product of its digits is 3919104, while the sum is 57.

The square root of 769398861 is about 27738.0399631986. The cubic root of 769398861 is about 916.3270624019.

The spelling of 769398861 in words is "seven hundred sixty-nine million, three hundred ninety-eight thousand, eight hundred sixty-one".