12239523 has 6 divisors (see below), whose sum is σ = 17679324. Its totient is φ = 8159676.

The previous prime is 12239509. The next prime is 12239527. The reversal of 12239523 is 32593221.

12239523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12239523 - 2¹⁴ = 12223139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12239527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 679965 + ... + 679982.

It is an arithmetic number, because the mean of its divisors is an integer number (2946554).

Almost surely, 2^12239523 is an apocalyptic number.

12239523 is a deficient number, since it is larger than the sum of its proper divisors (5439801).

12239523 is a wasteful number, since it uses less digits than its factorization.

12239523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359953 (or 1359950 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 12239523 is about 3498.5029655554. The cubic root of 12239523 is about 230.4560767548.

The spelling of 12239523 in words is "twelve million, two hundred thirty-nine thousand, five hundred twenty-three".