12138599 has 12 divisors (see below), whose sum is σ = 13658568. Its totient is φ = 10773840.

The previous prime is 12138593. The next prime is 12138613. The reversal of 12138599 is 99583121.

12138599 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-12138599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12138593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4037 + ... + 6369.

It is an arithmetic number, because the mean of its divisors is an integer number (1138214).

Almost surely, 2^12138599 is an apocalyptic number.

12138599 is a deficient number, since it is larger than the sum of its proper divisors (1519969).

12138599 is a wasteful number, since it uses less digits than its factorization.

12138599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2398 (or 2387 counting only the distinct ones).

The product of its digits is 19440, while the sum is 38.

The square root of 12138599 is about 3484.0492246810. The cubic root of 12138599 is about 229.8209002698.

The spelling of 12138599 in words is "twelve million, one hundred thirty-eight thousand, five hundred ninety-nine".