89090900 has 72 divisors (see below), whose sum is σ = 206653440. Its totient is φ = 33264000.

The previous prime is 89090887. The next prime is 89090921. The reversal of 89090900 is 909098.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89405 + ... + 90395.

Almost surely, 2^89090900 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 89090900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103326720).

89090900 is an abundant number, since it is smaller than the sum of its proper divisors (117562540).

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

89090900 is a wasteful number, since it uses less digits than its factorization.

89090900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065 (or 1058 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 89090900 is about 9438.7975929140. The cubic root of 89090900 is about 446.6264598348.

Adding to 89090900 its reverse (909098), we get a palindrome (89999998).

The spelling of 89090900 in words is "eighty-nine million, ninety thousand, nine hundred".