238009 has 2 divisors, whose sum is σ = 238010. Its totient is φ = 238008.

The previous prime is 238001. The next prime is 238019. The reversal of 238009 is 900832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164025 + 73984 = 405^2 + 272^2 .

It is a cyclic number.

It is not a de Polignac number, because 238009 - 2³ = 238001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (238001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119004 + 119005.

It is an arithmetic number, because the mean of its divisors is an integer number (119005).

2²³⁸⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

238009 is a deficient number, since it is larger than the sum of its proper divisors (1).

238009 is an equidigital number, since it uses as much as digits as its factorization.

238009 is an evil number, because the sum of its binary digits is even.

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

The square root of 238009 is about 487.8616607195. The cubic root of 238009 is about 61.9723254915.

The spelling of 238009 in words is "two hundred thirty-eight thousand, nine".