239868 has 24 divisors (see below), whose sum is σ = 622160. Its totient is φ = 79920.

The previous prime is 239857. The next prime is 239873. The reversal of 239868 is 868932.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

239868 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1003 + ... + 1218.

2²³⁹⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

239868 is an abundant number, since it is smaller than the sum of its proper divisors (382292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

239868 is a wasteful number, since it uses less digits than its factorization.

239868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234 (or 2226 counting only the distinct ones).

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

The square root of 239868 is about 489.7632080914. The cubic root of 239868 is about 62.1332548438.

The spelling of 239868 in words is "two hundred thirty-nine thousand, eight hundred sixty-eight".