989996896 has 96 divisors (see below), whose sum is σ = 2317170240. Its totient is φ = 407371776.

The previous prime is 989996893. The next prime is 989996923. The reversal of 989996896 is 698699989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989996893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1669176 + ... + 1669768.

It is an arithmetic number, because the mean of its divisors is an integer number (24137190).

Almost surely, 2^989996896 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 989996896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1158585120).

989996896 is an abundant number, since it is smaller than the sum of its proper divisors (1327173344).

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

989996896 is a wasteful number, since it uses less digits than its factorization.

989996896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896 (or 888 counting only the distinct ones).

The product of its digits is 136048896, while the sum is 73.

The square root of 989996896 is about 31464.2161192679. The cubic root of 989996896 is about 996.6544517891.

The spelling of 989996896 in words is "nine hundred eighty-nine million, nine hundred ninety-six thousand, eight hundred ninety-six".