230809 has 4 divisors (see below), whose sum is σ = 244404. Its totient is φ = 217216.

The previous prime is 230807. The next prime is 230819. The reversal of 230809 is 908032.

230809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 205209 + 25600 = 453^2 + 160^2 .

It is a cyclic number.

It is not a de Polignac number, because 230809 - 2¹ = 230807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 230809.

It is not an unprimeable number, because it can be changed into a prime (230807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6772 + ... + 6805.

It is an arithmetic number, because the mean of its divisors is an integer number (61101).

2²³⁰⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

230809 is a deficient number, since it is larger than the sum of its proper divisors (13595).

230809 is a wasteful number, since it uses less digits than its factorization.

230809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13594.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 230809 is about 480.4258527598. The cubic root of 230809 is about 61.3410086750.

The spelling of 230809 in words is "two hundred thirty thousand, eight hundred nine".