999320960 has 256 divisors, whose sum is σ = 2843596800. Its totient is φ = 331776000.

The previous prime is 999320899. The next prime is 999320969. The reversal of 999320960 is 69023999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999320969) 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 31 ways as a sum of consecutive naturals, for example, 4146440 + ... + 4146680.

It is an arithmetic number, because the mean of its divisors is an integer number (11107800).

Almost surely, 2^999320960 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 999320960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1421798400).

999320960 is an abundant number, since it is smaller than the sum of its proper divisors (1844275840).

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

999320960 is a wasteful number, since it uses less digits than its factorization.

999320960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 236196, while the sum is 47.

The square root of 999320960 is about 31612.0382133136. The cubic root of 999320960 is about 999.7736020812.

The spelling of 999320960 in words is "nine hundred ninety-nine million, three hundred twenty thousand, nine hundred sixty".