8207189 has 2 divisors, whose sum is σ = 8207190. Its totient is φ = 8207188.

The previous prime is 8207161. The next prime is 8207191. The reversal of 8207189 is 9817028.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7606564 + 600625 = 2758^2 + 775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8207189 is a prime.

It is a Sophie Germain prime.

Together with 8207191, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8207789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4103594 + 4103595.

It is an arithmetic number, because the mean of its divisors is an integer number (4103595).

Almost surely, 2^8207189 is an apocalyptic number.

It is an amenable number.

8207189 is a deficient number, since it is larger than the sum of its proper divisors (1).

8207189 is an equidigital number, since it uses as much as digits as its factorization.

8207189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 8207189 is about 2864.8191915023. The cubic root of 8207189 is about 201.7118805194.

The spelling of 8207189 in words is "eight million, two hundred seven thousand, one hundred eighty-nine".