12984979 has 4 divisors (see below), whose sum is σ = 14839984. Its totient is φ = 11129976.

The previous prime is 12984973. The next prime is 12984989. The reversal of 12984979 is 97948921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12984979 - 2³ = 12984971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12984971) 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, 927492 + ... + 927505.

It is an arithmetic number, because the mean of its divisors is an integer number (3709996).

Almost surely, 2^12984979 is an apocalyptic number.

12984979 is a deficient number, since it is larger than the sum of its proper divisors (1855005).

12984979 is an equidigital number, since it uses as much as digits as its factorization.

12984979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855004.

The product of its digits is 326592, while the sum is 49.

The square root of 12984979 is about 3603.4676354867. The cubic root of 12984979 is about 235.0428713093.

The spelling of 12984979 in words is "twelve million, nine hundred eighty-four thousand, nine hundred seventy-nine".