12499539 has 24 divisors (see below), whose sum is σ = 19083120. Its totient is φ = 7233024.

The previous prime is 12499537. The next prime is 12499561. The reversal of 12499539 is 93599421.

12499539 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12499539 - 2¹ = 12499537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12499539.

It is not an unprimeable number, because it can be changed into a prime (12499537) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10717 + ... + 11825.

It is an arithmetic number, because the mean of its divisors is an integer number (795130).

Almost surely, 2^12499539 is an apocalyptic number.

12499539 is a deficient number, since it is larger than the sum of its proper divisors (6583581).

12499539 is a wasteful number, since it uses less digits than its factorization.

12499539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159 (or 1142 counting only the distinct ones).

The product of its digits is 87480, while the sum is 42.

The square root of 12499539 is about 3535.4687100864. The cubic root of 12499539 is about 232.0765886156.

The spelling of 12499539 in words is "twelve million, four hundred ninety-nine thousand, five hundred thirty-nine".