7116209 has 2 divisors, whose sum is σ = 7116210. Its totient is φ = 7116208.

The previous prime is 7116139. The next prime is 7116229. The reversal of 7116209 is 9026117.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5895184 + 1221025 = 2428^2 + 1105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7116209 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7116229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3558104 + 3558105.

It is an arithmetic number, because the mean of its divisors is an integer number (3558105).

Almost surely, 2^7116209 is an apocalyptic number.

It is an amenable number.

7116209 is a deficient number, since it is larger than the sum of its proper divisors (1).

7116209 is an equidigital number, since it uses as much as digits as its factorization.

7116209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 7116209 is about 2667.6223495840. The cubic root of 7116209 is about 192.3458844064.

The spelling of 7116209 in words is "seven million, one hundred sixteen thousand, two hundred nine".