898191 has 24 divisors (see below), whose sum is σ = 1516320. Its totient is φ = 501696.

The previous prime is 898189. The next prime is 898199. The reversal of 898191 is 191898.

It is not a de Polignac number, because 898191 - 2¹ = 898189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (898199) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3205 + ... + 3473.

It is an arithmetic number, because the mean of its divisors is an integer number (63180).

2⁸⁹⁸¹⁹¹ is an apocalyptic number.

898191 is a deficient number, since it is larger than the sum of its proper divisors (618129).

898191 is a wasteful number, since it uses less digits than its factorization.

898191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 332 counting only the distinct ones).

The product of its digits is 5184, while the sum is 36.

The square root of 898191 is about 947.7293917570. The cubic root of 898191 is about 96.4842072825.

It can be divided in two parts, 898 and 191, that added together give a square (1089 = 33²).

The spelling of 898191 in words is "eight hundred ninety-eight thousand, one hundred ninety-one".