8408189 has 2 divisors, whose sum is σ = 8408190. Its totient is φ = 8408188.

The previous prime is 8408143. The next prime is 8408227. The reversal of 8408189 is 9818048.

It is an a-pointer prime, because the next prime (8408227) can be obtained adding 8408189 to its sum of digits (38).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6980164 + 1428025 = 2642^2 + 1195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8408189 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8408129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4204094 + 4204095.

It is an arithmetic number, because the mean of its divisors is an integer number (4204095).

Almost surely, 2^8408189 is an apocalyptic number.

It is an amenable number.

8408189 is a deficient number, since it is larger than the sum of its proper divisors (1).

8408189 is an equidigital number, since it uses as much as digits as its factorization.

8408189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 8408189 is about 2899.6877418095. The cubic root of 8408189 is about 203.3453076050.

The spelling of 8408189 in words is "eight million, four hundred eight thousand, one hundred eighty-nine".