4231239 has 4 divisors (see below), whose sum is σ = 5641656. Its totient is φ = 2820824.

The previous prime is 4231229. The next prime is 4231247. The reversal of 4231239 is 9321324.

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 4231239 - 2⁵ = 4231207 is a prime.

It is a D-number.

4231239 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4231219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 705204 + ... + 705209.

It is an arithmetic number, because the mean of its divisors is an integer number (1410414).

Almost surely, 2^4231239 is an apocalyptic number.

4231239 is a deficient number, since it is larger than the sum of its proper divisors (1410417).

4231239 is a wasteful number, since it uses less digits than its factorization.

4231239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410416.

The product of its digits is 1296, while the sum is 24.

The square root of 4231239 is about 2056.9975692742. The cubic root of 4231239 is about 161.7418919880.

The spelling of 4231239 in words is "four million, two hundred thirty-one thousand, two hundred thirty-nine".