881189 has 4 divisors (see below), whose sum is σ = 891180. Its totient is φ = 871200.

The previous prime is 881173. The next prime is 881191. The reversal of 881189 is 981188.

881189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 550564 + 330625 = 742^2 + 575^2 .

It is a cyclic number.

It is not a de Polignac number, because 881189 - 2⁴ = 881173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881119) 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, 4862 + ... + 5039.

It is an arithmetic number, because the mean of its divisors is an integer number (222795).

2⁸⁸¹¹⁸⁹ is an apocalyptic number.

881189 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

881189 is a deficient number, since it is larger than the sum of its proper divisors (9991).

881189 is an equidigital number, since it uses as much as digits as its factorization.

881189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9990.

The product of its digits is 4608, while the sum is 35.

The square root of 881189 is about 938.7166771716. The cubic root of 881189 is about 95.8715367952.

Subtracting 881189 from its reverse (981188), we obtain a palindrome (99999).

The spelling of 881189 in words is "eight hundred eighty-one thousand, one hundred eighty-nine".