999666112 has 42 divisors (see below), whose sum is σ = 2073780968. Its totient is φ = 478084992.

The previous prime is 999666103. The next prime is 999666119. The reversal of 999666112 is 211666999.

999666112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999666119) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19093 + ... + 48619.

Almost surely, 2^999666112 is an apocalyptic number.

999666112 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999666112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1036890484).

999666112 is an abundant number, since it is smaller than the sum of its proper divisors (1074114856).

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

999666112 is a wasteful number, since it uses less digits than its factorization.

999666112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29585 (or 29552 counting only the distinct ones).

The product of its digits is 314928, while the sum is 49.

The square root of 999666112 is about 31617.4969281251. The cubic root of 999666112 is about 999.8886916109. Note that the first 3 decimals are identical.

The spelling of 999666112 in words is "nine hundred ninety-nine million, six hundred sixty-six thousand, one hundred twelve".