22209079 has 2 divisors, whose sum is σ = 22209080. Its totient is φ = 22209078.

The previous prime is 22209071. The next prime is 22209097. The reversal of 22209079 is 97090222.

Together with next prime (22209097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22209079 - 2³ = 22209071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22209079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22209071) 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, 11104539 + 11104540.

It is an arithmetic number, because the mean of its divisors is an integer number (11104540).

Almost surely, 2^22209079 is an apocalyptic number.

22209079 is a deficient number, since it is larger than the sum of its proper divisors (1).

22209079 is an equidigital number, since it uses as much as digits as its factorization.

22209079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 22209079 is about 4712.6509524895. The cubic root of 22209079 is about 281.0887837215.

The spelling of 22209079 in words is "twenty-two million, two hundred nine thousand, seventy-nine".