12622979 has 2 divisors, whose sum is σ = 12622980. Its totient is φ = 12622978.

The previous prime is 12622949. The next prime is 12622997. The reversal of 12622979 is 97922621.

Together with next prime (12622997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12622979 - 2¹² = 12618883 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12622949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6311489 + 6311490.

It is an arithmetic number, because the mean of its divisors is an integer number (6311490).

Almost surely, 2^12622979 is an apocalyptic number.

12622979 is a deficient number, since it is larger than the sum of its proper divisors (1).

12622979 is an equidigital number, since it uses as much as digits as its factorization.

12622979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 12622979 is about 3552.8831953781. The cubic root of 12622979 is about 232.8380498873.

The spelling of 12622979 in words is "twelve million, six hundred twenty-two thousand, nine hundred seventy-nine".