779316469 has 2 divisors, whose sum is σ = 779316470. Its totient is φ = 779316468.

The previous prime is 779316467. The next prime is 779316497. The reversal of 779316469 is 964613977.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 754216369 + 25100100 = 27463^2 + 5010^2 .

It is a cyclic number.

It is not a de Polignac number, because 779316469 - 2¹ = 779316467 is a prime.

It is a super-2 number, since 2×779316469² = 1214668317709255922, which contains 22 as substring.

Together with 779316467, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (779316467) 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 as a sum of consecutive naturals, namely, 389658234 + 389658235.

It is an arithmetic number, because the mean of its divisors is an integer number (389658235).

Almost surely, 2^779316469 is an apocalyptic number.

It is an amenable number.

779316469 is a deficient number, since it is larger than the sum of its proper divisors (1).

779316469 is an equidigital number, since it uses as much as digits as its factorization.

779316469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1714608, while the sum is 52.

The square root of 779316469 is about 27916.2402375392. The cubic root of 779316469 is about 920.2474401384.

The spelling of 779316469 in words is "seven hundred seventy-nine million, three hundred sixteen thousand, four hundred sixty-nine".