89189999808 has 448 divisors, whose sum is σ = 304998973440. Its totient is φ = 22369996800.

The previous prime is 89189999791. The next prime is 89189999827. The reversal of 89189999808 is 80899998198.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (78).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31954893 + ... + 31957683.

It is an arithmetic number, because the mean of its divisors is an integer number (680801280).

Almost surely, 2^89189999808 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 89189999808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152499486720).

89189999808 is an abundant number, since it is smaller than the sum of its proper divisors (215808973632).

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

89189999808 is a wasteful number, since it uses less digits than its factorization.

89189999808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916 (or 2906 counting only the distinct ones).

The product of its (nonzero) digits is 241864704, while the sum is 78.

The spelling of 89189999808 in words is "eighty-nine billion, one hundred eighty-nine million, nine hundred ninety-nine thousand, eight hundred eight".