8387609 has 2 divisors, whose sum is σ = 8387610. Its totient is φ = 8387608.

The previous prime is 8387591. The next prime is 8387611. The reversal of 8387609 is 9067838.

8387609 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., 4853209 + 3534400 = 2203^2 + 1880^2 .

It is a cyclic number.

It is not a de Polignac number, because 8387609 - 2¹² = 8383513 is a prime.

It is a Sophie Germain prime.

Together with 8387611, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8387809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4193804 + 4193805.

It is an arithmetic number, because the mean of its divisors is an integer number (4193805).

Almost surely, 2^8387609 is an apocalyptic number.

It is an amenable number.

8387609 is a deficient number, since it is larger than the sum of its proper divisors (1).

8387609 is an equidigital number, since it uses as much as digits as its factorization.

8387609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 8387609 is about 2896.1369097472. The cubic root of 8387609 is about 203.1792684664.

The spelling of 8387609 in words is "eight million, three hundred eighty-seven thousand, six hundred nine".