238109 has 2 divisors, whose sum is σ = 238110. Its totient is φ = 238108.

The previous prime is 238103. The next prime is 238141. The reversal of 238109 is 901832.

238109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178084 + 60025 = 422^2 + 245^2 .

It is a cyclic number.

It is not a de Polignac number, because 238109 - 2⁴ = 238093 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119054 + 119055.

It is an arithmetic number, because the mean of its divisors is an integer number (119055).

2²³⁸¹⁰⁹ is an apocalyptic number.

It is an amenable number.

238109 is a deficient number, since it is larger than the sum of its proper divisors (1).

238109 is an equidigital number, since it uses as much as digits as its factorization.

238109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 238109 is about 487.9641380266. The cubic root of 238109 is about 61.9810035454.

The spelling of 238109 in words is "two hundred thirty-eight thousand, one hundred nine".