22108979 has 2 divisors, whose sum is σ = 22108980. Its totient is φ = 22108978.

The previous prime is 22108973. The next prime is 22108981. The reversal of 22108979 is 97980122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22108979 - 2¹⁶ = 22043443 is a prime.

Together with 22108981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22108973) 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, 11054489 + 11054490.

It is an arithmetic number, because the mean of its divisors is an integer number (11054490).

Almost surely, 2^22108979 is an apocalyptic number.

22108979 is a deficient number, since it is larger than the sum of its proper divisors (1).

22108979 is an equidigital number, since it uses as much as digits as its factorization.

22108979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 22108979 is about 4702.0186090657. The cubic root of 22108979 is about 280.6658430838.

The spelling of 22108979 in words is "twenty-two million, one hundred eight thousand, nine hundred seventy-nine".