809307189 has 12 divisors (see below), whose sum is σ = 1188813600. Its totient is φ = 530393064.

The previous prime is 809307157. The next prime is 809307197. The reversal of 809307189 is 981703908.

It is not a de Polignac number, because 809307189 - 2⁵ = 809307157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809307139) 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, 761529 + ... + 762590.

It is an arithmetic number, because the mean of its divisors is an integer number (99067800).

Almost surely, 2^809307189 is an apocalyptic number.

It is an amenable number.

809307189 is a deficient number, since it is larger than the sum of its proper divisors (379506411).

809307189 is a wasteful number, since it uses less digits than its factorization.

809307189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524184 (or 1524181 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 809307189 is about 28448.3248891741. The cubic root of 809307189 is about 931.9039074764.

The spelling of 809307189 in words is "eight hundred nine million, three hundred seven thousand, one hundred eighty-nine".