98891 has 4 divisors (see below), whose sum is σ = 106512. Its totient is φ = 91272.

The previous prime is 98887. The next prime is 98893. The reversal of 98891 is 19889.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 98891 - 2² = 98887 is a prime.

It is a d-powerful number, because it can be written as 9⁴ + 8³ + 8⁵ + 9⁵ + 1 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3791 + ... + 3816.

It is an arithmetic number, because the mean of its divisors is an integer number (26628).

2⁹⁸⁸⁹¹ is an apocalyptic number.

98891 is a deficient number, since it is larger than the sum of its proper divisors (7621).

98891 is a wasteful number, since it uses less digits than its factorization.

98891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7620.

The product of its digits is 5184, while the sum is 35.

The square root of 98891 is about 314.4693943773. The cubic root of 98891 is about 46.2436660428.

It can be divided in two parts, 98 and 891, that added together give a palindrome (989).

The spelling of 98891 in words is "ninety-eight thousand, eight hundred ninety-one".