12599879 has 4 divisors (see below), whose sum is σ = 12643176. Its totient is φ = 12556584.

The previous prime is 12599861. The next prime is 12599911. The reversal of 12599879 is 97899521.

It is a happy number.

12599879 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97899521 = 37 ⋅2645933.

It is a cyclic number.

It is not a de Polignac number, because 12599879 - 2⁸ = 12599623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12599179) 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, 21209 + ... + 21794.

It is an arithmetic number, because the mean of its divisors is an integer number (3160794).

Almost surely, 2^12599879 is an apocalyptic number.

12599879 is a deficient number, since it is larger than the sum of its proper divisors (43297).

12599879 is an equidigital number, since it uses as much as digits as its factorization.

12599879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43296.

The product of its digits is 408240, while the sum is 50.

The square root of 12599879 is about 3549.6308258747. The cubic root of 12599879 is about 232.6959322671.

The spelling of 12599879 in words is "twelve million, five hundred ninety-nine thousand, eight hundred seventy-nine".