999112712 has 32 divisors (see below), whose sum is σ = 2136115800. Its totient is φ = 434002944.

The previous prime is 999112711. The next prime is 999112747. The reversal of 999112712 is 217211999.

It can be written as a sum of positive squares in 4 ways, for example, as 860014276 + 139098436 = 29326^2 + 11794^2 .

It is a super-2 number, since 2×999112712² = 1996452422559989888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 999112712.

It is not an unprimeable number, because it can be changed into a prime (999112711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280787 + ... + 284322.

Almost surely, 2^999112712 is an apocalyptic number.

It is an amenable number.

999112712 is an abundant number, since it is smaller than the sum of its proper divisors (1137003088).

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

999112712 is a wasteful number, since it uses less digits than its factorization.

999112712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565145 (or 565141 counting only the distinct ones).

The product of its digits is 20412, while the sum is 41.

The square root of 999112712 is about 31608.7442332023. The cubic root of 999112712 is about 999.7041498146.

The spelling of 999112712 in words is "nine hundred ninety-nine million, one hundred twelve thousand, seven hundred twelve".