9218089 has 2 divisors, whose sum is σ = 9218090. Its totient is φ = 9218088.

The previous prime is 9218087. The next prime is 9218107. The reversal of 9218089 is 9808129.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9000000 + 218089 = 3000^2 + 467^2 .

It is a cyclic number.

It is not a de Polignac number, because 9218089 - 2¹ = 9218087 is a prime.

Together with 9218087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9218087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4609044 + 4609045.

It is an arithmetic number, because the mean of its divisors is an integer number (4609045).

Almost surely, 2^9218089 is an apocalyptic number.

It is an amenable number.

9218089 is a deficient number, since it is larger than the sum of its proper divisors (1).

9218089 is an equidigital number, since it uses as much as digits as its factorization.

9218089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 9218089 is about 3036.1305966641. The cubic root of 9218089 is about 209.6751515690.

It can be divided in two parts, 92 and 18089, that added together give a palindrome (18181).

The spelling of 9218089 in words is "nine million, two hundred eighteen thousand, eighty-nine".