12386979 has 32 divisors (see below), whose sum is σ = 20217600. Its totient is φ = 7433280.

The previous prime is 12386977. The next prime is 12386987. The reversal of 12386979 is 97968321.

It is not a de Polignac number, because 12386979 - 2¹ = 12386977 is a prime.

Its product of digits (163296) is a multiple of the sum of its prime factors (432).

It is not an unprimeable number, because it can be changed into a prime (12386977) 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 31 ways as a sum of consecutive naturals, for example, 53047 + ... + 53279.

It is an arithmetic number, because the mean of its divisors is an integer number (631800).

Almost surely, 2^12386979 is an apocalyptic number.

12386979 is a deficient number, since it is larger than the sum of its proper divisors (7830621).

12386979 is a wasteful number, since it uses less digits than its factorization.

12386979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 426 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 12386979 is about 3519.5140289534. The cubic root of 12386979 is about 231.3778602390.

The spelling of 12386979 in words is "twelve million, three hundred eighty-six thousand, nine hundred seventy-nine".