9118609 has 2 divisors, whose sum is σ = 9118610. Its totient is φ = 9118608.

The previous prime is 9118607. The next prime is 9118621. The reversal of 9118609 is 9068119.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4928400 + 4190209 = 2220^2 + 2047^2 .

It is an emirp because it is prime and its reverse (9068119) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9118609 - 2¹ = 9118607 is a prime.

Together with 9118607, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9118607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4559304 + 4559305.

It is an arithmetic number, because the mean of its divisors is an integer number (4559305).

Almost surely, 2^9118609 is an apocalyptic number.

It is an amenable number.

9118609 is a deficient number, since it is larger than the sum of its proper divisors (1).

9118609 is an equidigital number, since it uses as much as digits as its factorization.

9118609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 9118609 is about 3019.7034622625. The cubic root of 9118609 is about 208.9181627505.

The spelling of 9118609 in words is "nine million, one hundred eighteen thousand, six hundred nine".