989598816 has 48 divisors (see below), whose sum is σ = 2886332400. Its totient is φ = 329865984.

The previous prime is 989598773. The next prime is 989598853. The reversal of 989598816 is 618895989.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571821 + ... + 573548.

It is an arithmetic number, because the mean of its divisors is an integer number (60131925).

Almost surely, 2^989598816 is an apocalyptic number.

989598816 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

989598816 is an abundant number, since it is smaller than the sum of its proper divisors (1896733584).

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

989598816 is a wasteful number, since it uses less digits than its factorization.

989598816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145388 (or 1145374 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 63.

The square root of 989598816 is about 31457.8895668479. The cubic root of 989598816 is about 996.5208482073.

The spelling of 989598816 in words is "nine hundred eighty-nine million, five hundred ninety-eight thousand, eight hundred sixteen".