8140609 has 2 divisors, whose sum is σ = 8140610. Its totient is φ = 8140608.

The previous prime is 8140589. The next prime is 8140651. The reversal of 8140609 is 9060418.

8140609 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4326400 + 3814209 = 2080^2 + 1953^2 .

It is a cyclic number.

It is not a de Polignac number, because 8140609 - 2⁵ = 8140577 is a prime.

It is not a weakly prime, because it can be changed into another prime (8140669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4070304 + 4070305.

It is an arithmetic number, because the mean of its divisors is an integer number (4070305).

Almost surely, 2^8140609 is an apocalyptic number.

It is an amenable number.

8140609 is a deficient number, since it is larger than the sum of its proper divisors (1).

8140609 is an equidigital number, since it uses as much as digits as its factorization.

8140609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 8140609 is about 2853.1752487360. The cubic root of 8140609 is about 201.1649430309.

The spelling of 8140609 in words is "eight million, one hundred forty thousand, six hundred nine".