3116809 has 2 divisors, whose sum is σ = 3116810. Its totient is φ = 3116808.

The previous prime is 3116807. The next prime is 3116819. The reversal of 3116809 is 9086113.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2732409 + 384400 = 1653^2 + 620^2 .

It is an emirp because it is prime and its reverse (9086113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3116809 - 2¹ = 3116807 is a prime.

Together with 3116807, it forms a pair of twin primes.

It is a Chen prime.

3116809 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3116807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1558404 + 1558405.

It is an arithmetic number, because the mean of its divisors is an integer number (1558405).

Almost surely, 2^3116809 is an apocalyptic number.

It is an amenable number.

3116809 is a deficient number, since it is larger than the sum of its proper divisors (1).

3116809 is an equidigital number, since it uses as much as digits as its factorization.

3116809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 3116809 is about 1765.4486681861. The cubic root of 3116809 is about 146.0730384539.

The spelling of 3116809 in words is "three million, one hundred sixteen thousand, eight hundred nine".