999168 has 36 divisors (see below), whose sum is σ = 2661288. Its totient is φ = 332800.

The previous prime is 999149. The next prime is 999169. The reversal of 999168 is 861999.

999168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118 + ... + 1418.

2⁹⁹⁹¹⁶⁸ 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 999168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1330644).

999168 is an abundant number, since it is smaller than the sum of its proper divisors (1662120).

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

999168 is a wasteful number, since it uses less digits than its factorization.

999168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320 (or 1306 counting only the distinct ones).

The product of its digits is 34992, while the sum is 42.

The square root of 999168 is about 999.5839134360. The cubic root of 999168 is about 99.9722589717.

The spelling of 999168 in words is "nine hundred ninety-nine thousand, one hundred sixty-eight".