889089999 has 16 divisors (see below), whose sum is σ = 1380367872. Its totient is φ = 498464928.

The previous prime is 889089991. The next prime is 889090019. The reversal of 889089999 is 999980988.

It is not a de Polignac number, because 889089999 - 2³ = 889089991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889089991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 398299 + ... + 400524.

It is an arithmetic number, because the mean of its divisors is an integer number (86272992).

Almost surely, 2^889089999 is an apocalyptic number.

889089999 is a deficient number, since it is larger than the sum of its proper divisors (491277873).

889089999 is a wasteful number, since it uses less digits than its factorization.

889089999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798886.

The product of its (nonzero) digits is 30233088, while the sum is 69.

The square root of 889089999 is about 29817.6122283459. The cubic root of 889089999 is about 961.5722208132.

It can be divided in two parts, 8890 and 89999, that added together give a palindrome (98889).

The spelling of 889089999 in words is "eight hundred eighty-nine million, eighty-nine thousand, nine hundred ninety-nine".