999960224 has 36 divisors (see below), whose sum is σ = 2024081514. Its totient is φ = 485937792.

The previous prime is 999960163. The next prime is 999960229. The reversal of 999960224 is 422069999.

999960224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 662135824 + 337824400 = 25732^2 + 18380^2 .

It is not an unprimeable number, because it can be changed into a prime (999960229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1087637 + ... + 1088555.

Almost surely, 2^999960224 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 999960224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1012040757).

999960224 is an abundant number, since it is smaller than the sum of its proper divisors (1024121290).

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

999960224 is an frugal number, since it uses more digits than its factorization.

999960224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 50.

The square root of 999960224 is about 31622.1476816487. The cubic root of 999960224 is about 999.9867411575.

The spelling of 999960224 in words is "nine hundred ninety-nine million, nine hundred sixty thousand, two hundred twenty-four".