239945 has 8 divisors (see below), whose sum is σ = 295944. Its totient is φ = 186624.

The previous prime is 239933. The next prime is 239947. The reversal of 239945 is 549932.

239945 is nontrivially palindromic in base 6.

239945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 150544 + 89401 = 388^2 + 299^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 239945 - 2⁴ = 239929 is a prime.

It is a Duffinian number.

239945 is an undulating number in base 6.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (239947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464 + ... + 833.

It is an arithmetic number, because the mean of its divisors is an integer number (36993).

2²³⁹⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

239945 is a deficient number, since it is larger than the sum of its proper divisors (55999).

239945 is a wasteful number, since it uses less digits than its factorization.

239945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339.

The product of its digits is 9720, while the sum is 32.

The square root of 239945 is about 489.8418112003. The cubic root of 239945 is about 62.1399025956.

The spelling of 239945 in words is "two hundred thirty-nine thousand, nine hundred forty-five".