9116209 has 4 divisors (see below), whose sum is σ = 9126400. Its totient is φ = 9106020.

The previous prime is 9116207. The next prime is 9116213. The reversal of 9116209 is 9026119.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9116209 - 2¹ = 9116207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9116203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3609 + ... + 5590.

It is an arithmetic number, because the mean of its divisors is an integer number (2281600).

Almost surely, 2^9116209 is an apocalyptic number.

It is an amenable number.

9116209 is a deficient number, since it is larger than the sum of its proper divisors (10191).

9116209 is an equidigital number, since it uses as much as digits as its factorization.

9116209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10190.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 9116209 is about 3019.3060460973. The cubic root of 9116209 is about 208.8998321921.

The spelling of 9116209 in words is "nine million, one hundred sixteen thousand, two hundred nine".