808779941927 has 4 divisors (see below), whose sum is σ = 828506282016. Its totient is φ = 789053601840.

The previous prime is 808779941899. The next prime is 808779941941. The reversal of 808779941927 is 729149977808.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 808779941927 - 2¹⁸ = 808779679783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808779901927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9863169983 + ... + 9863170064.

It is an arithmetic number, because the mean of its divisors is an integer number (207126570504).

Almost surely, 2^808779941927 is an apocalyptic number.

808779941927 is a deficient number, since it is larger than the sum of its proper divisors (19726340089).

808779941927 is a wasteful number, since it uses less digits than its factorization.

808779941927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19726340088.

The product of its (nonzero) digits is 128024064, while the sum is 71.

The spelling of 808779941927 in words is "eight hundred eight billion, seven hundred seventy-nine million, nine hundred forty-one thousand, nine hundred twenty-seven".