999329120 has 96 divisors (see below), whose sum is σ = 2430878688. Its totient is φ = 388067328.

The previous prime is 999329083. The next prime is 999329129. The reversal of 999329120 is 21923999.

999329120 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999329129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 781922 + ... + 783198.

It is an arithmetic number, because the mean of its divisors is an integer number (25321653).

Almost surely, 2^999329120 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 999329120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1215439344).

999329120 is an abundant number, since it is smaller than the sum of its proper divisors (1431549568).

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

999329120 is a wasteful number, since it uses less digits than its factorization.

999329120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432 (or 1424 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 44.

The square root of 999329120 is about 31612.1672778062. The cubic root of 999329120 is about 999.7763233058.

The spelling of 999329120 in words is "nine hundred ninety-nine million, three hundred twenty-nine thousand, one hundred twenty".