12633979 has 2 divisors, whose sum is σ = 12633980. Its totient is φ = 12633978.

The previous prime is 12633977. The next prime is 12633997. The reversal of 12633979 is 97933621.

Together with next prime (12633997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (97933621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12633979 - 2¹ = 12633977 is a prime.

Together with 12633977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12633977) 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, 6316989 + 6316990.

It is an arithmetic number, because the mean of its divisors is an integer number (6316990).

Almost surely, 2^12633979 is an apocalyptic number.

12633979 is a deficient number, since it is larger than the sum of its proper divisors (1).

12633979 is an equidigital number, since it uses as much as digits as its factorization.

12633979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 40.

The square root of 12633979 is about 3554.4308967822. The cubic root of 12633979 is about 232.9056640096.

The spelling of 12633979 in words is "twelve million, six hundred thirty-three thousand, nine hundred seventy-nine".