808055779 has 2 divisors, whose sum is σ = 808055780. Its totient is φ = 808055778.

The previous prime is 808055771. The next prime is 808055821. The reversal of 808055779 is 977550808.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 808055779 - 2³ = 808055771 is a prime.

It is not a weakly prime, because it can be changed into another prime (808055771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404027889 + 404027890.

It is an arithmetic number, because the mean of its divisors is an integer number (404027890).

Almost surely, 2^808055779 is an apocalyptic number.

808055779 is a deficient number, since it is larger than the sum of its proper divisors (1).

808055779 is an equidigital number, since it uses as much as digits as its factorization.

808055779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705600, while the sum is 49.

The square root of 808055779 is about 28426.3219393575. The cubic root of 808055779 is about 931.4233336859.

The spelling of 808055779 in words is "eight hundred eight million, fifty-five thousand, seven hundred seventy-nine".