8988401856 has 112 divisors (see below), whose sum is σ = 27296815104. Its totient is φ = 2557003776.

The previous prime is 8988401809. The next prime is 8988401887. The reversal of 8988401856 is 6581048898.

It is a tau number, because it is divible by the number of its divisors (112).

It is a junction number, because it is equal to n+sod(n) for n = 8988401796 and 8988401805.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298801 + ... + 327503.

Almost surely, 2^8988401856 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 8988401856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13648407552).

8988401856 is an abundant number, since it is smaller than the sum of its proper divisors (18308413248).

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

8988401856 is a wasteful number, since it uses less digits than its factorization.

8988401856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28958 (or 28948 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 57.

The square root of 8988401856 is about 94807.1825127189. The cubic root of 8988401856 is about 2079.1899162985.

The spelling of 8988401856 in words is "eight billion, nine hundred eighty-eight million, four hundred one thousand, eight hundred fifty-six".