89111000 has 64 divisors (see below), whose sum is σ = 227504160. Its totient is φ = 32400000.

The previous prime is 89110981. The next prime is 89111021. The reversal of 89111000 is 11198.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6950 + ... + 15050.

Almost surely, 2^89111000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89111000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113752080).

89111000 is an abundant number, since it is smaller than the sum of its proper divisors (138393160).

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

89111000 is a wasteful number, since it uses less digits than its factorization.

89111000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8133 (or 8119 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 89111000 is about 9439.8622871311. The cubic root of 89111000 is about 446.6600454453.

Adding to 89111000 its reverse (11198), we get a palindrome (89122198).

The spelling of 89111000 in words is "eighty-nine million, one hundred eleven thousand".