808645089 has 12 divisors (see below), whose sum is σ = 1254225264. Its totient is φ = 462082824.

The previous prime is 808645067. The next prime is 808645093. The reversal of 808645089 is 980546808.

It is not a de Polignac number, because 808645089 - 2²⁰ = 807596513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (808647089) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2750347 + ... + 2750640.

It is an arithmetic number, because the mean of its divisors is an integer number (104518772).

Almost surely, 2^808645089 is an apocalyptic number.

It is an amenable number.

808645089 is a deficient number, since it is larger than the sum of its proper divisors (445580175).

808645089 is a wasteful number, since it uses less digits than its factorization.

808645089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5501004 (or 5500997 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 48.

The square root of 808645089 is about 28436.6856191083. The cubic root of 808645089 is about 931.6497057249.

The spelling of 808645089 in words is "eight hundred eight million, six hundred forty-five thousand, eighty-nine".