239965 has 8 divisors (see below), whose sum is σ = 314208. Its totient is φ = 174480.

The previous prime is 239963. The next prime is 239977. The reversal of 239965 is 569932.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 239965 - 2¹ = 239963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 239965.

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 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, 2127 + ... + 2236.

It is an arithmetic number, because the mean of its divisors is an integer number (39276).

2²³⁹⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

239965 is a deficient number, since it is larger than the sum of its proper divisors (74243).

239965 is a wasteful number, since it uses less digits than its factorization.

239965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4379.

The product of its digits is 14580, while the sum is 34.

The square root of 239965 is about 489.8622255288. The cubic root of 239965 is about 62.1416290517.

The spelling of 239965 in words is "two hundred thirty-nine thousand, nine hundred sixty-five".