999999116 has 24 divisors (see below), whose sum is σ = 1807862784. Its totient is φ = 483492240.

The previous prime is 999999113. The next prime is 999999131. The reversal of 999999116 is 611999999.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is not an unprimeable number, because it can be changed into a prime (999999113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218831 + ... + 223353.

It is an arithmetic number, because the mean of its divisors is an integer number (75327616).

Almost surely, 2^999999116 is an apocalyptic number.

It is an amenable number.

999999116 is a deficient number, since it is larger than the sum of its proper divisors (807863668).

999999116 is a wasteful number, since it uses less digits than its factorization.

999999116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6341 (or 6339 counting only the distinct ones).

The product of its digits is 3188646, while the sum is 62.

The square root of 999999116 is about 31622.7626244134. The cubic root of 999999116 is about 999.9997053332. Note that the first 3 decimals are identical.

The spelling of 999999116 in words is "nine hundred ninety-nine million, nine hundred ninety-nine thousand, one hundred sixteen".