12239827 has 4 divisors (see below), whose sum is σ = 12661920. Its totient is φ = 11817736.

The previous prime is 12239809. The next prime is 12239839. The reversal of 12239827 is 72893221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72893221 = 79 ⋅922699.

It is a cyclic number.

It is not a de Polignac number, because 12239827 - 2¹¹ = 12237779 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12239792 and 12239801.

It is not an unprimeable number, because it can be changed into a prime (12239897) 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, 211003 + ... + 211060.

It is an arithmetic number, because the mean of its divisors is an integer number (3165480).

Almost surely, 2^12239827 is an apocalyptic number.

12239827 is a deficient number, since it is larger than the sum of its proper divisors (422093).

12239827 is an equidigital number, since it uses as much as digits as its factorization.

12239827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422092.

The product of its digits is 12096, while the sum is 34.

The square root of 12239827 is about 3498.5464124405. The cubic root of 12239827 is about 230.4579847286.

The spelling of 12239827 in words is "twelve million, two hundred thirty-nine thousand, eight hundred twenty-seven".