779949968 has 20 divisors (see below), whose sum is σ = 1727032320. Its totient is φ = 334264224.

The previous prime is 779949967. The next prime is 779949991. The reversal of 779949968 is 869949977.

It is a junction number, because it is equal to n+sod(n) for n = 779949898 and 779949907.

It is not an unprimeable number, because it can be changed into a prime (779949967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3481808 + ... + 3482031.

It is an arithmetic number, because the mean of its divisors is an integer number (86351616).

Almost surely, 2^779949968 is an apocalyptic number.

It is an amenable number.

779949968 is an abundant number, since it is smaller than the sum of its proper divisors (947082352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

779949968 is a wasteful number, since it uses less digits than its factorization.

779949968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6963854 (or 6963848 counting only the distinct ones).

The product of its digits is 61725888, while the sum is 68.

The square root of 779949968 is about 27927.5843566894. The cubic root of 779949968 is about 920.4967260885.

Subtracting 779949968 from its reverse (869949977), we obtain a palindrome (90000009).

The spelling of 779949968 in words is "seven hundred seventy-nine million, nine hundred forty-nine thousand, nine hundred sixty-eight".