999113212 has 12 divisors (see below), whose sum is σ = 1749580560. Its totient is φ = 499233056.

The previous prime is 999113177. The next prime is 999113221. The reversal of 999113212 is 212311999.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73873 + ... + 86344.

It is an arithmetic number, because the mean of its divisors is an integer number (145798380).

Almost surely, 2^999113212 is an apocalyptic number.

It is an amenable number.

999113212 is a deficient number, since it is larger than the sum of its proper divisors (750467348).

999113212 is a wasteful number, since it uses less digits than its factorization.

999113212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161780 (or 161778 counting only the distinct ones).

The product of its digits is 8748, while the sum is 37.

The square root of 999113212 is about 31608.7521424051. The cubic root of 999113212 is about 999.7043165799.

The spelling of 999113212 in words is "nine hundred ninety-nine million, one hundred thirteen thousand, two hundred twelve".