12479239 has 4 divisors (see below), whose sum is σ = 12506656. Its totient is φ = 12451824.

The previous prime is 12479237. The next prime is 12479261. The reversal of 12479239 is 93297421.

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 12479239 - 2¹ = 12479237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12479198 and 12479207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12479231) 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, 13014 + ... + 13939.

It is an arithmetic number, because the mean of its divisors is an integer number (3126664).

Almost surely, 2^12479239 is an apocalyptic number.

12479239 is a deficient number, since it is larger than the sum of its proper divisors (27417).

12479239 is an equidigital number, since it uses as much as digits as its factorization.

12479239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27416.

The product of its digits is 27216, while the sum is 37.

The square root of 12479239 is about 3532.5966370363. The cubic root of 12479239 is about 231.9508851143.

The spelling of 12479239 in words is "twelve million, four hundred seventy-nine thousand, two hundred thirty-nine".