12977579 has 8 divisors (see below), whose sum is σ = 13772880. Its totient is φ = 12185856.

The previous prime is 12977539. The next prime is 12977597. The reversal of 12977579 is 97577921.

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 12977579 - 2¹² = 12973483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12977509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12047 + ... + 13079.

It is an arithmetic number, because the mean of its divisors is an integer number (1721610).

Almost surely, 2^12977579 is an apocalyptic number.

12977579 is a deficient number, since it is larger than the sum of its proper divisors (795301).

12977579 is a wasteful number, since it uses less digits than its factorization.

12977579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789.

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

The square root of 12977579 is about 3602.4407004141. The cubic root of 12977579 is about 234.9982133560.

The spelling of 12977579 in words is "twelve million, nine hundred seventy-seven thousand, five hundred seventy-nine".