239413 has 4 divisors (see below), whose sum is σ = 247168. Its totient is φ = 231660.

The previous prime is 239389. The next prime is 239417. The reversal of 239413 is 314932.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239413 is a prime.

It is a Duffinian number.

239413 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239417) 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, 3831 + ... + 3892.

It is an arithmetic number, because the mean of its divisors is an integer number (61792).

2²³⁹⁴¹³ is an apocalyptic number.

It is an amenable number.

239413 is a deficient number, since it is larger than the sum of its proper divisors (7755).

239413 is an equidigital number, since it uses as much as digits as its factorization.

239413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7754.

The product of its digits is 648, while the sum is 22.

The square root of 239413 is about 489.2984774143. The cubic root of 239413 is about 62.0939436044.

The spelling of 239413 in words is "two hundred thirty-nine thousand, four hundred thirteen".