999999000719 has 2 divisors, whose sum is σ = 999999000720. Its totient is φ = 999999000718.

The previous prime is 999999000709. The next prime is 999999000733. The reversal of 999999000719 is 917000999999.

It is a happy number.

999999000719 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999999000719 - 2²⁰ = 999997952143 is a prime.

It is a super-2 number, since 2×999999000719² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999999000709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499999500359 + 499999500360.

It is an arithmetic number, because the mean of its divisors is an integer number (499999500360).

Almost surely, 2^999999000719 is an apocalyptic number.

999999000719 is a deficient number, since it is larger than the sum of its proper divisors (1).

999999000719 is an equidigital number, since it uses as much as digits as its factorization.

999999000719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33480783, while the sum is 71.

The spelling of 999999000719 in words is "nine hundred ninety-nine billion, nine hundred ninety-nine million, seven hundred nineteen", and thus it is an aban number.