999918756 has 72 divisors (see below), whose sum is σ = 2630881344. Its totient is φ = 332074080.

The previous prime is 999918737. The next prime is 999918761. The reversal of 999918756 is 657819999.

999918756 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 = 999918693 and 999918702.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 283041 + ... + 286551.

Almost surely, 2^999918756 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 999918756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1315440672).

999918756 is an abundant number, since it is smaller than the sum of its proper divisors (1630962588).

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

999918756 is a wasteful number, since it uses less digits than its factorization.

999918756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3823 (or 3809 counting only the distinct ones).

The product of its digits is 11022480, while the sum is 63.

The square root of 999918756 is about 31621.4919951605. The cubic root of 999918756 is about 999.9729179332.

The spelling of 999918756 in words is "nine hundred ninety-nine million, nine hundred eighteen thousand, seven hundred fifty-six".