8195009 has 2 divisors, whose sum is σ = 8195010. Its totient is φ = 8195008.

The previous prime is 8194997. The next prime is 8195017. The reversal of 8195009 is 9005918.

8195009 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., 6235009 + 1960000 = 2497^2 + 1400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8195009 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 (8195059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4097504 + 4097505.

It is an arithmetic number, because the mean of its divisors is an integer number (4097505).

Almost surely, 2^8195009 is an apocalyptic number.

It is an amenable number.

8195009 is a deficient number, since it is larger than the sum of its proper divisors (1).

8195009 is an equidigital number, since it uses as much as digits as its factorization.

8195009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 8195009 is about 2862.6926136070. The cubic root of 8195009 is about 201.6120466184.

The spelling of 8195009 in words is "eight million, one hundred ninety-five thousand, nine".