12979385 has 8 divisors (see below), whose sum is σ = 16112520. Its totient is φ = 10025344.

The previous prime is 12979361. The next prime is 12979391. The reversal of 12979385 is 58397921.

It can be written as a sum of positive squares in 4 ways, for example, as 896809 + 12082576 = 947^2 + 3476^2 .

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 12979385 - 2⁸ = 12979129 is a prime.

It is a Curzon number.

It is an unprimeable number.

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, 44612 + ... + 44901.

It is an arithmetic number, because the mean of its divisors is an integer number (2014065).

Almost surely, 2^12979385 is an apocalyptic number.

It is an amenable number.

12979385 is a deficient number, since it is larger than the sum of its proper divisors (3133135).

12979385 is an equidigital number, since it uses as much as digits as its factorization.

12979385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89547.

The product of its digits is 136080, while the sum is 44.

The square root of 12979385 is about 3602.6913550844. The cubic root of 12979385 is about 235.0091138762.

The spelling of 12979385 in words is "twelve million, nine hundred seventy-nine thousand, three hundred eighty-five".