238809 has 8 divisors (see below), whose sum is σ = 332352. Its totient is φ = 152240.

The previous prime is 238801. The next prime is 238829. The reversal of 238809 is 908832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 238809 - 2³ = 238801 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (238801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1662 + ... + 1799.

It is an arithmetic number, because the mean of its divisors is an integer number (41544).

2²³⁸⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

238809 is a deficient number, since it is larger than the sum of its proper divisors (93543).

238809 is a wasteful number, since it uses less digits than its factorization.

238809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3487.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 238809 is about 488.6808774650. The cubic root of 238809 is about 62.0416819956.

The spelling of 238809 in words is "two hundred thirty-eight thousand, eight hundred nine".