8081009 has 2 divisors, whose sum is σ = 8081010. Its totient is φ = 8081008.

The previous prime is 8080999. The next prime is 8081011. The reversal of 8081009 is 9001808.

8081009 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., 6864400 + 1216609 = 2620^2 + 1103^2 .

It is a cyclic number.

It is not a de Polignac number, because 8081009 - 2⁴ = 8080993 is a prime.

Together with 8081011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8089009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4040504 + 4040505.

It is an arithmetic number, because the mean of its divisors is an integer number (4040505).

Almost surely, 2^8081009 is an apocalyptic number.

It is an amenable number.

8081009 is a deficient number, since it is larger than the sum of its proper divisors (1).

8081009 is an equidigital number, since it uses as much as digits as its factorization.

8081009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 8081009 is about 2842.7115576505. The cubic root of 8081009 is about 200.6728091015.

The spelling of 8081009 in words is "eight million, eighty-one thousand, nine".