999313120 has 96 divisors (see below), whose sum is σ = 2601843552. Its totient is φ = 360364032.

The previous prime is 999313103. The next prime is 999313121. The reversal of 999313120 is 21313999.

It is a self number, because there is not a number n which added to its sum of digits gives 999313120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999313121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83854 + ... + 95026.

It is an arithmetic number, because the mean of its divisors is an integer number (27102537).

Almost surely, 2^999313120 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 999313120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1300921776).

999313120 is an abundant number, since it is smaller than the sum of its proper divisors (1602530432).

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

999313120 is a wasteful number, since it uses less digits than its factorization.

999313120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11244 (or 11236 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 999313120 is about 31611.9142096773. The cubic root of 999313120 is about 999.7709875573.

The spelling of 999313120 in words is "nine hundred ninety-nine million, three hundred thirteen thousand, one hundred twenty".