12779879 has 8 divisors (see below), whose sum is σ = 14704800. Its totient is φ = 10879776.

The previous prime is 12779861. The next prime is 12779917. The reversal of 12779879 is 97897721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12779879 - 2⁸ = 12779623 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 (12779849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5084 + ... + 7169.

It is an arithmetic number, because the mean of its divisors is an integer number (1838100).

Almost surely, 2^12779879 is an apocalyptic number.

12779879 is a deficient number, since it is larger than the sum of its proper divisors (1924921).

12779879 is a wasteful number, since it uses less digits than its factorization.

12779879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12409.

The product of its digits is 444528, while the sum is 50.

The square root of 12779879 is about 3574.8956628131. The cubic root of 12779879 is about 233.7987836069.

The spelling of 12779879 in words is "twelve million, seven hundred seventy-nine thousand, eight hundred seventy-nine".