898189 has 2 divisors, whose sum is σ = 898190. Its totient is φ = 898188.

The previous prime is 898181. The next prime is 898199. The reversal of 898189 is 981898.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 708964 + 189225 = 842^2 + 435^2 .

It is a cyclic number.

It is not a de Polignac number, because 898189 - 2³ = 898181 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (898181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449094 + 449095.

It is an arithmetic number, because the mean of its divisors is an integer number (449095).

2⁸⁹⁸¹⁸⁹ is an apocalyptic number.

It is an amenable number.

898189 is a deficient number, since it is larger than the sum of its proper divisors (1).

898189 is an equidigital number, since it uses as much as digits as its factorization.

898189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 43.

The square root of 898189 is about 947.7283366028. The cubic root of 898189 is about 96.4841356687.

The spelling of 898189 in words is "eight hundred ninety-eight thousand, one hundred eighty-nine".