239964 has 12 divisors (see below), whose sum is σ = 559944. Its totient is φ = 79984.

The previous prime is 239963. The next prime is 239977. The reversal of 239964 is 469932.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9987 + ... + 10010.

It is an arithmetic number, because the mean of its divisors is an integer number (46662).

2²³⁹⁹⁶⁴ is an apocalyptic number.

It is an amenable number.

239964 is an abundant number, since it is smaller than the sum of its proper divisors (319980).

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

239964 is a wasteful number, since it uses less digits than its factorization.

239964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20004 (or 20002 counting only the distinct ones).

The product of its digits is 11664, while the sum is 33.

The square root of 239964 is about 489.8612048326. The cubic root of 239964 is about 62.1415427312.

The spelling of 239964 in words is "two hundred thirty-nine thousand, nine hundred sixty-four".