239864 has 8 divisors (see below), whose sum is σ = 449760. Its totient is φ = 119928.

The previous prime is 239857. The next prime is 239873. The reversal of 239864 is 468932.

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 239864.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 239864.

It is an unprimeable number.

239864 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14984 + ... + 14999.

It is an arithmetic number, because the mean of its divisors is an integer number (56220).

2²³⁹⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

239864 is a deficient number, since it is larger than the sum of its proper divisors (209896).

239864 is a wasteful number, since it uses less digits than its factorization.

239864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29989 (or 29985 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 239864 is about 489.7591244683. The cubic root of 239864 is about 62.1329094672.

The spelling of 239864 in words is "two hundred thirty-nine thousand, eight hundred sixty-four".