8117189 has 2 divisors, whose sum is σ = 8117190. Its totient is φ = 8117188.

The previous prime is 8117173. The next prime is 8117191. The reversal of 8117189 is 9817118.

8117189 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., 7745089 + 372100 = 2783^2 + 610^2 .

It is a cyclic number.

It is not a de Polignac number, because 8117189 - 2⁴ = 8117173 is a prime.

Together with 8117191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8117119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4058594 + 4058595.

It is an arithmetic number, because the mean of its divisors is an integer number (4058595).

Almost surely, 2^8117189 is an apocalyptic number.

It is an amenable number.

8117189 is a deficient number, since it is larger than the sum of its proper divisors (1).

8117189 is an equidigital number, since it uses as much as digits as its factorization.

8117189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 35.

The square root of 8117189 is about 2849.0680932544. The cubic root of 8117189 is about 200.9718449380.

It can be divided in two parts, 811 and 7189, that added together give a cube (8000 = 20³).

The spelling of 8117189 in words is "eight million, one hundred seventeen thousand, one hundred eighty-nine".