12979605 has 8 divisors (see below), whose sum is σ = 20767392. Its totient is φ = 6922448.

The previous prime is 12979601. The next prime is 12979643. The reversal of 12979605 is 50697921.

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 12979605 - 2² = 12979601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12979601) 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, 432639 + ... + 432668.

It is an arithmetic number, because the mean of its divisors is an integer number (2595924).

Almost surely, 2^12979605 is an apocalyptic number.

12979605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12979605 is a deficient number, since it is larger than the sum of its proper divisors (7787787).

12979605 is an equidigital number, since it uses as much as digits as its factorization.

12979605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865315.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 12979605 is about 3602.7218876844. The cubic root of 12979605 is about 235.0104416667.

The spelling of 12979605 in words is "twelve million, nine hundred seventy-nine thousand, six hundred five".