12979955 has 8 divisors (see below), whose sum is σ = 15764112. Its totient is φ = 10258528.

The previous prime is 12979931. The next prime is 12979961. The reversal of 12979955 is 55997921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12979955 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15224 + ... + 16053.

It is an arithmetic number, because the mean of its divisors is an integer number (1970514).

Almost surely, 2^12979955 is an apocalyptic number.

12979955 is a deficient number, since it is larger than the sum of its proper divisors (2784157).

12979955 is an equidigital number, since it uses as much as digits as its factorization.

12979955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31365.

The product of its digits is 255150, while the sum is 47.

The square root of 12979955 is about 3602.7704617419. The cubic root of 12979955 is about 235.0125540298.

The spelling of 12979955 in words is "twelve million, nine hundred seventy-nine thousand, nine hundred fifty-five".