779345689 has 12 divisors (see below), whose sum is σ = 808901184. Its totient is φ = 750784464.

The previous prime is 779345687. The next prime is 779345701. The reversal of 779345689 is 986543977.

It is not a de Polignac number, because 779345689 - 2¹ = 779345687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (779345683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138244 + ... + 143770.

It is an arithmetic number, because the mean of its divisors is an integer number (67408432).

Almost surely, 2^779345689 is an apocalyptic number.

It is an amenable number.

779345689 is a deficient number, since it is larger than the sum of its proper divisors (29555495).

779345689 is a wasteful number, since it uses less digits than its factorization.

779345689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5704 (or 5667 counting only the distinct ones).

The product of its digits is 11430720, while the sum is 58.

The square root of 779345689 is about 27916.7635839114. The cubic root of 779345689 is about 920.2589413685.

The spelling of 779345689 in words is "seven hundred seventy-nine million, three hundred forty-five thousand, six hundred eighty-nine".