12439267 has 4 divisors (see below), whose sum is σ = 12518656. Its totient is φ = 12359880.

The previous prime is 12439253. The next prime is 12439279. The reversal of 12439267 is 76293421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76293421 = 4157 ⋅18353.

It is a cyclic number.

It is not a de Polignac number, because 12439267 - 2⁷ = 12439139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12439237) 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, 39459 + ... + 39772.

It is an arithmetic number, because the mean of its divisors is an integer number (3129664).

Almost surely, 2^12439267 is an apocalyptic number.

12439267 is a deficient number, since it is larger than the sum of its proper divisors (79389).

12439267 is an equidigital number, since it uses as much as digits as its factorization.

12439267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79388.

The product of its digits is 18144, while the sum is 34.

The square root of 12439267 is about 3526.9345046371. The cubic root of 12439267 is about 231.7029678176.

The spelling of 12439267 in words is "twelve million, four hundred thirty-nine thousand, two hundred sixty-seven".