808705089 has 6 divisors (see below), whose sum is σ = 1168129586. Its totient is φ = 539136720.

The previous prime is 808705087. The next prime is 808705133. The reversal of 808705089 is 980507808.

It can be written as a sum of positive squares in only one way, i.e., 463971600 + 344733489 = 21540^2 + 18567^2 .

It is not a de Polignac number, because 808705089 - 2¹ = 808705087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (808705087) 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 5 ways as a sum of consecutive naturals, for example, 44928052 + ... + 44928069.

Almost surely, 2^808705089 is an apocalyptic number.

It is an amenable number.

808705089 is a deficient number, since it is larger than the sum of its proper divisors (359424497).

808705089 is a wasteful number, since it uses less digits than its factorization.

808705089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89856127 (or 89856124 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 808705089 is about 28437.7405748066. The cubic root of 808705089 is about 931.6727473949.

The spelling of 808705089 in words is "eight hundred eight million, seven hundred five thousand, eighty-nine".