238689 has 12 divisors (see below), whose sum is σ = 376272. Its totient is φ = 144600.

The previous prime is 238681. The next prime is 238691. The reversal of 238689 is 986832.

It is not a de Polignac number, because 238689 - 2³ = 238681 is a prime.

238689 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (238681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1107 + ... + 1304.

It is an arithmetic number, because the mean of its divisors is an integer number (31356).

2²³⁸⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

238689 is a deficient number, since it is larger than the sum of its proper divisors (137583).

238689 is a wasteful number, since it uses less digits than its factorization.

238689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428 (or 2425 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 238689 is about 488.5580825245. The cubic root of 238689 is about 62.0312884046.

The spelling of 238689 in words is "two hundred thirty-eight thousand, six hundred eighty-nine".