999994000008 has 192 divisors, whose sum is σ = 2621928960000. Its totient is φ = 317484800640.

The previous prime is 999993999997. The next prime is 999994000037. The reversal of 999994000008 is 800000499999.

It is a Cunningham number, because it is equal to 999997²-1.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2003995743 + ... + 2003996241.

It is an arithmetic number, because the mean of its divisors is an integer number (13655880000).

Almost surely, 2^999994000008 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 999994000008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1310964480000).

999994000008 is an abundant number, since it is smaller than the sum of its proper divisors (1621934959992).

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

999994000008 is a wasteful number, since it uses less digits than its factorization.

999994000008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960 (or 829 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 57.

The spelling of 999994000008 in words is "nine hundred ninety-nine billion, nine hundred ninety-four million, eight", and thus it is an aban number.