999000000667 has 2 divisors, whose sum is σ = 999000000668. Its totient is φ = 999000000666.

The previous prime is 999000000643. The next prime is 999000000673. The reversal of 999000000667 is 766000000999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999000000667 - 2³¹ = 996852517019 is a prime.

It is not a weakly prime, because it can be changed into another prime (999000000617) by changing a digit.

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 as a sum of consecutive naturals, namely, 499500000333 + 499500000334.

It is an arithmetic number, because the mean of its divisors is an integer number (499500000334).

Almost surely, 2^999000000667 is an apocalyptic number.

999000000667 is a deficient number, since it is larger than the sum of its proper divisors (1).

999000000667 is an equidigital number, since it uses as much as digits as its factorization.

999000000667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 183708, while the sum is 46.

The spelling of 999000000667 in words is "nine hundred ninety-nine billion, six hundred sixty-seven", and thus it is an aban number.