898209 has 20 divisors (see below), whose sum is σ = 1446676. Its totient is φ = 552096.

The previous prime is 898199. The next prime is 898211. The reversal of 898209 is 902898.

898209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 88209 + 810000 = 297^2 + 900^2 .

It is not a de Polignac number, because 898209 - 2¹⁶ = 832673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (898259) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 627 + ... + 1479.

2⁸⁹⁸²⁰⁹ is an apocalyptic number.

It is an amenable number.

898209 is a deficient number, since it is larger than the sum of its proper divisors (548467).

898209 is a wasteful number, since it uses less digits than its factorization.

898209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 898209 is about 947.7388880910. The cubic root of 898209 is about 96.4848518017.

The spelling of 898209 in words is "eight hundred ninety-eight thousand, two hundred nine".