12779859 has 8 divisors (see below), whose sum is σ = 17059840. Its totient is φ = 8509896.

The previous prime is 12779849. The next prime is 12779861. The reversal of 12779859 is 95897721.

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

It is a de Polignac number, because none of the positive numbers 2^k-12779859 is a prime.

It is a Duffinian 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, 1302 + ... + 5220.

It is an arithmetic number, because the mean of its divisors is an integer number (2132480).

Almost surely, 2^12779859 is an apocalyptic number.

12779859 is a deficient number, since it is larger than the sum of its proper divisors (4279981).

12779859 is a wasteful number, since it uses less digits than its factorization.

12779859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5009.

The product of its digits is 317520, while the sum is 48.

The square root of 12779859 is about 3574.8928655276. The cubic root of 12779859 is about 233.7986616450.

The spelling of 12779859 in words is "twelve million, seven hundred seventy-nine thousand, eight hundred fifty-nine".