239213 has 4 divisors (see below), whose sum is σ = 257628. Its totient is φ = 220800.

The previous prime is 239201. The next prime is 239231. The reversal of 239213 is 312932.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68644 + 170569 = 262^2 + 413^2 .

It is a cyclic number.

It is not a de Polignac number, because 239213 - 2¹² = 235117 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 (239233) 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 3 ways as a sum of consecutive naturals, for example, 9188 + ... + 9213.

It is an arithmetic number, because the mean of its divisors is an integer number (64407).

2²³⁹²¹³ is an apocalyptic number.

It is an amenable number.

239213 is a deficient number, since it is larger than the sum of its proper divisors (18415).

239213 is a wasteful number, since it uses less digits than its factorization.

239213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18414.

The product of its digits is 324, while the sum is 20.

The square root of 239213 is about 489.0940604833. The cubic root of 239213 is about 62.0766481799.

The spelling of 239213 in words is "two hundred thirty-nine thousand, two hundred thirteen".