899189 has 2 divisors, whose sum is σ = 899190. Its totient is φ = 899188.

The previous prime is 899183. The next prime is 899209. The reversal of 899189 is 981998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 874225 + 24964 = 935^2 + 158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-899189 is a prime.

It is a Chen prime.

It is a nialpdrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (899183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449594 + 449595.

It is an arithmetic number, because the mean of its divisors is an integer number (449595).

2⁸⁹⁹¹⁸⁹ is an apocalyptic number.

It is an amenable number.

899189 is a deficient number, since it is larger than the sum of its proper divisors (1).

899189 is an equidigital number, since it uses as much as digits as its factorization.

899189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 44.

The square root of 899189 is about 948.2557671852. The cubic root of 899189 is about 96.5199293049.

The spelling of 899189 in words is "eight hundred ninety-nine thousand, one hundred eighty-nine".