9818089 has 2 divisors, whose sum is σ = 9818090. Its totient is φ = 9818088.

The previous prime is 9818087. The next prime is 9818111. The reversal of 9818089 is 9808189.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9715689 + 102400 = 3117^2 + 320^2 .

It is a cyclic number.

It is not a de Polignac number, because 9818089 - 2¹ = 9818087 is a prime.

It is a super-2 number, since 2×9818089² = 192789743223842, which contains 22 as substring.

Together with 9818087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9818087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4909044 + 4909045.

It is an arithmetic number, because the mean of its divisors is an integer number (4909045).

Almost surely, 2^9818089 is an apocalyptic number.

It is an amenable number.

9818089 is a deficient number, since it is larger than the sum of its proper divisors (1).

9818089 is an equidigital number, since it uses as much as digits as its factorization.

9818089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 9818089 is about 3133.3829960603. The cubic root of 9818089 is about 214.1290818759.

The spelling of 9818089 in words is "nine million, eight hundred eighteen thousand, eighty-nine".