889391688 has 16 divisors (see below), whose sum is σ = 2223479280. Its totient is φ = 296463888.

The previous prime is 889391683. The next prime is 889391689. The reversal of 889391688 is 886193988.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (889391683) 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, 18528970 + ... + 18529017.

It is an arithmetic number, because the mean of its divisors is an integer number (138967455).

Almost surely, 2^889391688 is an apocalyptic number.

It is an amenable number.

889391688 is an abundant number, since it is smaller than the sum of its proper divisors (1334087592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

889391688 is a wasteful number, since it uses less digits than its factorization.

889391688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37057996 (or 37057992 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 60.

The square root of 889391688 is about 29822.6707053543. The cubic root of 889391688 is about 961.6809698172.

The spelling of 889391688 in words is "eight hundred eighty-nine million, three hundred ninety-one thousand, six hundred eighty-eight".