808784091 has 12 divisors (see below), whose sum is σ = 1174176432. Its totient is φ = 536451216.

The previous prime is 808784089. The next prime is 808784101. The reversal of 808784091 is 190487808.

It is not a de Polignac number, because 808784091 - 2¹ = 808784089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (808784071) 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 11 ways as a sum of consecutive naturals, for example, 226311 + ... + 229856.

It is an arithmetic number, because the mean of its divisors is an integer number (97848036).

Almost surely, 2^808784091 is an apocalyptic number.

808784091 is a deficient number, since it is larger than the sum of its proper divisors (365392341).

808784091 is a wasteful number, since it uses less digits than its factorization.

808784091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456370 (or 456367 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 808784091 is about 28439.1295752876. The cubic root of 808784091 is about 931.7030846236.

The spelling of 808784091 in words is "eight hundred eight million, seven hundred eighty-four thousand, ninety-one".