8999189 has 2 divisors, whose sum is σ = 8999190. Its totient is φ = 8999188.

The previous prime is 8999183. The next prime is 8999197. The reversal of 8999189 is 9819998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5098564 + 3900625 = 2258^2 + 1975^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8999189 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8999189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8999183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4499594 + 4499595.

It is an arithmetic number, because the mean of its divisors is an integer number (4499595).

Almost surely, 2^8999189 is an apocalyptic number.

It is an amenable number.

8999189 is a deficient number, since it is larger than the sum of its proper divisors (1).

8999189 is an equidigital number, since it uses as much as digits as its factorization.

8999189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 419904, while the sum is 53.

The square root of 8999189 is about 2999.8648302882. The cubic root of 8999189 is about 208.0021341620.

The spelling of 8999189 in words is "eight million, nine hundred ninety-nine thousand, one hundred eighty-nine".