888969889 has 4 divisors (see below), whose sum is σ = 894423856. Its totient is φ = 883515924.

The previous prime is 888969871. The next prime is 888969959. The reversal of 888969889 is 988969888.

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 888969889 - 2⁷ = 888969761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (888969839) 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, 2726739 + ... + 2727064.

It is an arithmetic number, because the mean of its divisors is an integer number (223605964).

Almost surely, 2^888969889 is an apocalyptic number.

It is an amenable number.

888969889 is a deficient number, since it is larger than the sum of its proper divisors (5453967).

888969889 is a wasteful number, since it uses less digits than its factorization.

888969889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5453966.

The product of its digits is 143327232, while the sum is 73.

The square root of 888969889 is about 29815.5980822119. The cubic root of 888969889 is about 961.5289182451.

Subtracting 888969889 from its reverse (988969888), we obtain a palindrome (99999999).

The spelling of 888969889 in words is "eight hundred eighty-eight million, nine hundred sixty-nine thousand, eight hundred eighty-nine".