8713239 has 4 divisors (see below), whose sum is σ = 11617656. Its totient is φ = 5808824.

The previous prime is 8713217. The next prime is 8713249. The reversal of 8713239 is 9323178.

8713239 is digitally balanced in base 3, 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.

It is a cyclic number.

It is not a de Polignac number, because 8713239 - 2⁹ = 8712727 is a prime.

It is a super-2 number, since 2×8713239² = 151841067742242, which contains 22 as substring.

8713239 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8713249) 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, 1452204 + ... + 1452209.

It is an arithmetic number, because the mean of its divisors is an integer number (2904414).

Almost surely, 2^8713239 is an apocalyptic number.

8713239 is a deficient number, since it is larger than the sum of its proper divisors (2904417).

8713239 is a wasteful number, since it uses less digits than its factorization.

8713239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904416.

The product of its digits is 9072, while the sum is 33.

The square root of 8713239 is about 2951.8196083094. The cubic root of 8713239 is about 205.7752835950.

The spelling of 8713239 in words is "eight million, seven hundred thirteen thousand, two hundred thirty-nine".