999332880 has 160 divisors (see below), whose sum is σ = 3812922624. Its totient is φ = 210843648.

The previous prime is 999332849. The next prime is 999332899. The reversal of 999332880 is 88233999.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1039 + ... + 44718.

Almost surely, 2^999332880 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 999332880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1906461312).

999332880 is an abundant number, since it is smaller than the sum of its proper divisors (2813589744).

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

999332880 is a wasteful number, since it uses less digits than its factorization.

999332880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45793 (or 45787 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 51.

The square root of 999332880 is about 31612.2267485225. The cubic root of 999332880 is about 999.7775771984. Note that the first 3 decimals are identical.

The spelling of 999332880 in words is "nine hundred ninety-nine million, three hundred thirty-two thousand, eight hundred eighty".