89881 has 4 divisors (see below), whose sum is σ = 98064. Its totient is φ = 81700.

The previous prime is 89867. The next prime is 89891. The reversal of 89881 is 18898.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 89881 - 2⁵ = 89849 is a prime.

It is a super-2 number, since 2×89881² = 16157188322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89821) 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, 4075 + ... + 4096.

It is an arithmetic number, because the mean of its divisors is an integer number (24516).

2⁸⁹⁸⁸¹ is an apocalyptic number.

It is an amenable number.

89881 is a deficient number, since it is larger than the sum of its proper divisors (8183).

89881 is a wasteful number, since it uses less digits than its factorization.

89881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8182.

The product of its digits is 4608, while the sum is 34.

The square root of 89881 is about 299.8016010631. The cubic root of 89881 is about 44.7942873775.

It can be divided in two parts, 898 and 81, that added together give a palindrome (979).

The spelling of 89881 in words is "eighty-nine thousand, eight hundred eighty-one".