12579779 has 8 divisors (see below), whose sum is σ = 13630320. Its totient is φ = 11563776.

The previous prime is 12579773. The next prime is 12579793. The reversal of 12579779 is 97797521.

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 12579779 - 2²⁰ = 11531203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12579773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7874 + ... + 9335.

It is an arithmetic number, because the mean of its divisors is an integer number (1703790).

Almost surely, 2^12579779 is an apocalyptic number.

12579779 is a deficient number, since it is larger than the sum of its proper divisors (1050541).

12579779 is a wasteful number, since it uses less digits than its factorization.

12579779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17269.

The product of its digits is 277830, while the sum is 47.

The square root of 12579779 is about 3546.7984154727. The cubic root of 12579779 is about 232.5721300849.

The spelling of 12579779 in words is "twelve million, five hundred seventy-nine thousand, seven hundred seventy-nine".