8170469809 has 2 divisors, whose sum is σ = 8170469810. Its totient is φ = 8170469808.

The previous prime is 8170469803. The next prime is 8170469897. The reversal of 8170469809 is 9089640718.

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., 8002197025 + 168272784 = 89455^2 + 12972^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8170469809 is a prime.

It is not a weakly prime, because it can be changed into another prime (8170469803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4085234904 + 4085234905.

It is an arithmetic number, because the mean of its divisors is an integer number (4085234905).

Almost surely, 2^8170469809 is an apocalyptic number.

It is an amenable number.

8170469809 is a deficient number, since it is larger than the sum of its proper divisors (1).

8170469809 is an equidigital number, since it uses as much as digits as its factorization.

8170469809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 8170469809 is about 90390.6511150351. The cubic root of 8170469809 is about 2014.1060925879.

The spelling of 8170469809 in words is "eight billion, one hundred seventy million, four hundred sixty-nine thousand, eight hundred nine".