779869049 has 2 divisors, whose sum is σ = 779869050. Its totient is φ = 779869048.

The previous prime is 779869031. The next prime is 779869087. The reversal of 779869049 is 940968977.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 778019449 + 1849600 = 27893^2 + 1360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-779869049 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (779869009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389934524 + 389934525.

It is an arithmetic number, because the mean of its divisors is an integer number (389934525).

Almost surely, 2^779869049 is an apocalyptic number.

It is an amenable number.

779869049 is a deficient number, since it is larger than the sum of its proper divisors (1).

779869049 is an equidigital number, since it uses as much as digits as its factorization.

779869049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6858432, while the sum is 59.

The square root of 779869049 is about 27926.1355901600. The cubic root of 779869049 is about 920.4648914607.

The spelling of 779869049 in words is "seven hundred seventy-nine million, eight hundred sixty-nine thousand, forty-nine".