999999000899 has 2 divisors, whose sum is σ = 999999000900. Its totient is φ = 999999000898.

The previous prime is 999999000857. The next prime is 999999000929. The reversal of 999999000899 is 998000999999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999999000899 - 2¹² = 999998996803 is a prime.

It is not a weakly prime, because it can be changed into another prime (999999000199) 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, 499999500449 + 499999500450.

It is an arithmetic number, because the mean of its divisors is an integer number (499999500450).

Almost surely, 2^999999000899 is an apocalyptic number.

999999000899 is a deficient number, since it is larger than the sum of its proper divisors (1).

999999000899 is an equidigital number, since it uses as much as digits as its factorization.

999999000899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 344373768, while the sum is 80.

The spelling of 999999000899 in words is "nine hundred ninety-nine billion, nine hundred ninety-nine million, eight hundred ninety-nine", and thus it is an aban number.