498891 has 4 divisors (see below), whose sum is σ = 665192. Its totient is φ = 332592.

The previous prime is 498881. The next prime is 498907. The reversal of 498891 is 198894.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 498891 - 2⁵ = 498859 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (498881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83146 + ... + 83151.

It is an arithmetic number, because the mean of its divisors is an integer number (166298).

2⁴⁹⁸⁸⁹¹ is an apocalyptic number.

498891 is a deficient number, since it is larger than the sum of its proper divisors (166301).

498891 is a wasteful number, since it uses less digits than its factorization.

498891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166300.

The product of its digits is 20736, while the sum is 39.

The square root of 498891 is about 706.3221644547. The cubic root of 498891 is about 79.3113282346.

The spelling of 498891 in words is "four hundred ninety-eight thousand, eight hundred ninety-one".