12879719 has 4 divisors (see below), whose sum is σ = 12912240. Its totient is φ = 12847200.

The previous prime is 12879707. The next prime is 12879721. The reversal of 12879719 is 91797821.

12879719 is digitally balanced in base 2, 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12879719 is a prime.

It is a super-2 number, since 2×12879719² = 331774323037922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12879719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12879749) 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, 15659 + ... + 16460.

It is an arithmetic number, because the mean of its divisors is an integer number (3228060).

Almost surely, 2^12879719 is an apocalyptic number.

12879719 is a deficient number, since it is larger than the sum of its proper divisors (32521).

12879719 is an equidigital number, since it uses as much as digits as its factorization.

12879719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32520.

The product of its digits is 63504, while the sum is 44.

The square root of 12879719 is about 3588.8325399773. The cubic root of 12879719 is about 234.4060388878.

The spelling of 12879719 in words is "twelve million, eight hundred seventy-nine thousand, seven hundred nineteen".