873889 has 4 divisors (see below), whose sum is σ = 894256. Its totient is φ = 853524.

The previous prime is 873877. The next prime is 873913. The reversal of 873889 is 988378.

It is a happy number.

873889 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, 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 873889 - 2¹⁷ = 742817 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 20323 = 873889 / (8 + 7 + 3 + 8 + 8 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (873689) 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, 10119 + ... + 10204.

It is an arithmetic number, because the mean of its divisors is an integer number (223564).

2⁸⁷³⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

873889 is a deficient number, since it is larger than the sum of its proper divisors (20367).

873889 is a wasteful number, since it uses less digits than its factorization.

873889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20366.

The product of its digits is 96768, while the sum is 43.

The square root of 873889 is about 934.8203035878. The cubic root of 873889 is about 95.6060607258.

The spelling of 873889 in words is "eight hundred seventy-three thousand, eight hundred eighty-nine".