230409 has 6 divisors (see below), whose sum is σ = 332826. Its totient is φ = 153600.

The previous prime is 230393. The next prime is 230431. The reversal of 230409 is 904032.

It can be written as a sum of positive squares in only one way, i.e., 230400 + 9 = 480^2 + 3^2 .

It is not a de Polignac number, because 230409 - 2⁴ = 230393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 230391 and 230400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230449) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12792 + ... + 12809.

It is an arithmetic number, because the mean of its divisors is an integer number (55471).

2²³⁰⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

230409 is a deficient number, since it is larger than the sum of its proper divisors (102417).

230409 is a wasteful number, since it uses less digits than its factorization.

230409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25607 (or 25604 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 230409 is about 480.0093749084. The cubic root of 230409 is about 61.3055528201.

The spelling of 230409 in words is "two hundred thirty thousand, four hundred nine".