8116909 has 2 divisors, whose sum is σ = 8116910. Its totient is φ = 8116908.

The previous prime is 8116877. The next prime is 8116921. The reversal of 8116909 is 9096118.

8116909 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7856809 + 260100 = 2803^2 + 510^2 .

It is a cyclic number.

It is not a de Polignac number, because 8116909 - 2⁵ = 8116877 is a prime.

8116909 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8116109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4058454 + 4058455.

It is an arithmetic number, because the mean of its divisors is an integer number (4058455).

Almost surely, 2^8116909 is an apocalyptic number.

It is an amenable number.

8116909 is a deficient number, since it is larger than the sum of its proper divisors (1).

8116909 is an equidigital number, since it uses as much as digits as its factorization.

8116909 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 8116909 is about 2849.0189539559. The cubic root of 8116909 is about 200.9695340903.

It can be divided in two parts, 8116 and 909, that added together give a square (9025 = 95²).

The spelling of 8116909 in words is "eight million, one hundred sixteen thousand, nine hundred nine".