999112771 has 2 divisors, whose sum is σ = 999112772. Its totient is φ = 999112770.

The previous prime is 999112757. The next prime is 999112817. The reversal of 999112771 is 177211999.

It is an a-pointer prime, because the next prime (999112817) can be obtained adding 999112771 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999112771 - 2⁹ = 999112259 is a prime.

It is not a weakly prime, because it can be changed into another prime (999112711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499556385 + 499556386.

It is an arithmetic number, because the mean of its divisors is an integer number (499556386).

Almost surely, 2^999112771 is an apocalyptic number.

999112771 is a deficient number, since it is larger than the sum of its proper divisors (1).

999112771 is an equidigital number, since it uses as much as digits as its factorization.

999112771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71442, while the sum is 46.

The square root of 999112771 is about 31608.7451664883. The cubic root of 999112771 is about 999.7041694929.

The spelling of 999112771 in words is "nine hundred ninety-nine million, one hundred twelve thousand, seven hundred seventy-one".