89398640784 has 40 divisors (see below), whose sum is σ = 233327392480. Its totient is φ = 29492333568.

The previous prime is 89398640783. The next prime is 89398640803. The reversal of 89398640784 is 48704689398.

It is not an unprimeable number, because it can be changed into a prime (89398640783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9595714 + ... + 9605025.

It is an arithmetic number, because the mean of its divisors is an integer number (5833184812).

Almost surely, 2^89398640784 is an apocalyptic number.

It is an amenable number.

89398640784 is an abundant number, since it is smaller than the sum of its proper divisors (143928751696).

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

89398640784 is a wasteful number, since it uses less digits than its factorization.

89398640784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19200847 (or 19200841 counting only the distinct ones).

The product of its (nonzero) digits is 83607552, while the sum is 66.

The spelling of 89398640784 in words is "eighty-nine billion, three hundred ninety-eight million, six hundred forty thousand, seven hundred eighty-four".