999343871 has 2 divisors, whose sum is σ = 999343872. Its totient is φ = 999343870.

The previous prime is 999343867. The next prime is 999343879. The reversal of 999343871 is 178343999.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999343871 - 2² = 999343867 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999343879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499671935 + 499671936.

It is an arithmetic number, because the mean of its divisors is an integer number (499671936).

Almost surely, 2^999343871 is an apocalyptic number.

999343871 is a deficient number, since it is larger than the sum of its proper divisors (1).

999343871 is an equidigital number, since it uses as much as digits as its factorization.

999343871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 53.

The square root of 999343871 is about 31612.4005890094. The cubic root of 999343871 is about 999.7812424820.

The spelling of 999343871 in words is "nine hundred ninety-nine million, three hundred forty-three thousand, eight hundred seventy-one".