808800977 has 4 divisors (see below), whose sum is σ = 808867380. Its totient is φ = 808734576.

The previous prime is 808800961. The next prime is 808800983. The reversal of 808800977 is 779008808.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 426050881 + 382750096 = 20641^2 + 19564^2 .

It is a cyclic number.

It is not a de Polignac number, because 808800977 - 2⁴ = 808800961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (808800917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9098 + ... + 41235.

It is an arithmetic number, because the mean of its divisors is an integer number (202216845).

Almost surely, 2^808800977 is an apocalyptic number.

It is an amenable number.

808800977 is a deficient number, since it is larger than the sum of its proper divisors (66403).

808800977 is a wasteful number, since it uses less digits than its factorization.

808800977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66402.

The product of its (nonzero) digits is 225792, while the sum is 47.

The square root of 808800977 is about 28439.4264534290. The cubic root of 808800977 is about 931.7095686898.

The spelling of 808800977 in words is "eight hundred eight million, eight hundred thousand, nine hundred seventy-seven".