12735979 has 2 divisors, whose sum is σ = 12735980. Its totient is φ = 12735978.

The previous prime is 12735973. The next prime is 12736019. The reversal of 12735979 is 97953721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12735979 - 2³ = 12735971 is a prime.

It is a super-2 number, since 2×12735979² = 324410322176882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12735971) by changing a digit.

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 as a sum of consecutive naturals, namely, 6367989 + 6367990.

It is an arithmetic number, because the mean of its divisors is an integer number (6367990).

Almost surely, 2^12735979 is an apocalyptic number.

12735979 is a deficient number, since it is larger than the sum of its proper divisors (1).

12735979 is an equidigital number, since it uses as much as digits as its factorization.

12735979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 119070, while the sum is 43.

The square root of 12735979 is about 3568.7503415061. The cubic root of 12735979 is about 233.5307700785.

The spelling of 12735979 in words is "twelve million, seven hundred thirty-five thousand, nine hundred seventy-nine".