888889 has 4 divisors (see below), whose sum is σ = 902224. Its totient is φ = 875556.

The previous prime is 888887. The next prime is 888917. The reversal of 888889 is 988888.

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 not a de Polignac number, because 888889 - 2¹ = 888887 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (888887) 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, 6567 + ... + 6700.

It is an arithmetic number, because the mean of its divisors is an integer number (225556).

2⁸⁸⁸⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

888889 is a deficient number, since it is larger than the sum of its proper divisors (13335).

888889 is a wasteful number, since it uses less digits than its factorization.

888889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13334.

The product of its digits is 294912, while the sum is 49.

The square root of 888889 is about 942.8091005076. The cubic root of 888889 is about 96.1499753601.

Subtracting 888889 from its reverse (988888), we obtain a palindrome (99999).

The spelling of 888889 in words is "eight hundred eighty-eight thousand, eight hundred eighty-nine".