239693 has 4 divisors (see below), whose sum is σ = 240828. Its totient is φ = 238560.

The previous prime is 239689. The next prime is 239699. The reversal of 239693 is 396932.

239693 is nontrivially palindromic in base 6.

239693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 77284 + 162409 = 278^2 + 403^2 .

It is a cyclic number.

It is not a de Polignac number, because 239693 - 2² = 239689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239699) 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, 146 + ... + 707.

It is an arithmetic number, because the mean of its divisors is an integer number (60207).

2²³⁹⁶⁹³ is an apocalyptic number.

It is an amenable number.

239693 is a deficient number, since it is larger than the sum of its proper divisors (1135).

239693 is an equidigital number, since it uses as much as digits as its factorization.

239693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134.

The product of its digits is 8748, while the sum is 32.

The square root of 239693 is about 489.5845177291. The cubic root of 239693 is about 62.1181410244.

The spelling of 239693 in words is "two hundred thirty-nine thousand, six hundred ninety-three".