999499392168 has 32 divisors (see below), whose sum is σ = 2498779606560. Its totient is φ = 333162313920.

The previous prime is 999499392163. The next prime is 999499392179. The reversal of 999499392168 is 861293994999.

999499392168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 999499392093 and 999499392102.

It is not an unprimeable number, because it can be changed into a prime (999499392163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2172903 + ... + 2592393.

It is an arithmetic number, because the mean of its divisors is an integer number (78086862705).

Almost surely, 2^999499392168 is an apocalyptic number.

It is an amenable number.

999499392168 is an abundant number, since it is smaller than the sum of its proper divisors (1499280214392).

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

999499392168 is a wasteful number, since it uses less digits than its factorization.

999499392168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518777 (or 518773 counting only the distinct ones).

The product of its digits is 612220032, while the sum is 78.

The spelling of 999499392168 in words is "nine hundred ninety-nine billion, four hundred ninety-nine million, three hundred ninety-two thousand, one hundred sixty-eight".