779332969 has 2 divisors, whose sum is σ = 779332970. Its totient is φ = 779332968.

The previous prime is 779332949. The next prime is 779332973. The reversal of 779332969 is 969233977.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 766459225 + 12873744 = 27685^2 + 3588^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-779332969 is a prime.

It is a super-2 number, since 2×779332969² = 1214719753140709922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (779332919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389666484 + 389666485.

It is an arithmetic number, because the mean of its divisors is an integer number (389666485).

Almost surely, 2^779332969 is an apocalyptic number.

It is an amenable number.

779332969 is a deficient number, since it is larger than the sum of its proper divisors (1).

779332969 is an equidigital number, since it uses as much as digits as its factorization.

779332969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3857868, while the sum is 55.

The square root of 779332969 is about 27916.5357628772. The cubic root of 779332969 is about 920.2539347082.

The spelling of 779332969 in words is "seven hundred seventy-nine million, three hundred thirty-two thousand, nine hundred sixty-nine".