13512979 has 2 divisors, whose sum is σ = 13512980. Its totient is φ = 13512978.

The previous prime is 13512953. The next prime is 13512991. The reversal of 13512979 is 97921531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13512979 - 2¹⁹ = 12988691 is a prime.

It is not a weakly prime, because it can be changed into another prime (13512949) 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 as a sum of consecutive naturals, namely, 6756489 + 6756490.

It is an arithmetic number, because the mean of its divisors is an integer number (6756490).

Almost surely, 2^13512979 is an apocalyptic number.

13512979 is a deficient number, since it is larger than the sum of its proper divisors (1).

13512979 is an equidigital number, since it uses as much as digits as its factorization.

13512979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 37.

The square root of 13512979 is about 3676.0004080522. Note that the first 3 decimals coincide. The cubic root of 13512979 is about 238.1864403108.

The spelling of 13512979 in words is "thirteen million, five hundred twelve thousand, nine hundred seventy-nine".