809889201 has 12 divisors (see below), whose sum is σ = 1276189200. Its totient is φ = 490841880.

The previous prime is 809889187. The next prime is 809889203. The reversal of 809889201 is 102988908.

809889201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 809889201 - 2⁵ = 809889169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (809889203) 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, 4090251 + ... + 4090448.

It is an arithmetic number, because the mean of its divisors is an integer number (106349100).

Almost surely, 2^809889201 is an apocalyptic number.

It is an amenable number.

809889201 is a deficient number, since it is larger than the sum of its proper divisors (466299999).

809889201 is a wasteful number, since it uses less digits than its factorization.

809889201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8180716 (or 8180713 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The square root of 809889201 is about 28458.5523349309. The cubic root of 809889201 is about 932.1272463598.

The spelling of 809889201 in words is "eight hundred nine million, eight hundred eighty-nine thousand, two hundred one".