779671349 has 2 divisors, whose sum is σ = 779671350. Its totient is φ = 779671348.

The previous prime is 779671339. The next prime is 779671367. The reversal of 779671349 is 943176977.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 738480625 + 41190724 = 27175^2 + 6418^2 .

It is a cyclic number.

It is not a de Polignac number, because 779671349 - 2²⁰ = 778622773 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 779671349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (779671339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389835674 + 389835675.

It is an arithmetic number, because the mean of its divisors is an integer number (389835675).

Almost surely, 2^779671349 is an apocalyptic number.

It is an amenable number.

779671349 is a deficient number, since it is larger than the sum of its proper divisors (1).

779671349 is an equidigital number, since it uses as much as digits as its factorization.

779671349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2000376, while the sum is 53.

The square root of 779671349 is about 27922.5956708899. The cubic root of 779671349 is about 920.3871043465.

The spelling of 779671349 in words is "seven hundred seventy-nine million, six hundred seventy-one thousand, three hundred forty-nine".