22989217 has 2 divisors, whose sum is σ = 22989218. Its totient is φ = 22989216.

The previous prime is 22989209. The next prime is 22989277. The reversal of 22989217 is 71298922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17272336 + 5716881 = 4156^2 + 2391^2 .

It is a cyclic number.

It is not a de Polignac number, because 22989217 - 2³ = 22989209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22989217.

It is not a weakly prime, because it can be changed into another prime (22989277) 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, 11494608 + 11494609.

It is an arithmetic number, because the mean of its divisors is an integer number (11494609).

Almost surely, 2^22989217 is an apocalyptic number.

It is an amenable number.

22989217 is a deficient number, since it is larger than the sum of its proper divisors (1).

22989217 is an equidigital number, since it uses as much as digits as its factorization.

22989217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 40.

The square root of 22989217 is about 4794.7071860542. The cubic root of 22989217 is about 284.3422484038.

The spelling of 22989217 in words is "twenty-two million, nine hundred eighty-nine thousand, two hundred seventeen".