809112801 has 32 divisors (see below), whose sum is σ = 1265080320. Its totient is φ = 450451584.

The previous prime is 809112797. The next prime is 809112823. The reversal of 809112801 is 108211908.

It is not a de Polignac number, because 809112801 - 2² = 809112797 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (809112001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124060 + ... + 130418.

It is an arithmetic number, because the mean of its divisors is an integer number (39533760).

Almost surely, 2^809112801 is an apocalyptic number.

It is an amenable number.

809112801 is a deficient number, since it is larger than the sum of its proper divisors (455967519).

809112801 is a wasteful number, since it uses less digits than its factorization.

809112801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6525.

The product of its (nonzero) digits is 1152, while the sum is 30.

The square root of 809112801 is about 28444.9081735203. The cubic root of 809112801 is about 931.8292899744.

The spelling of 809112801 in words is "eight hundred nine million, one hundred twelve thousand, eight hundred one".