999999000709 has 2 divisors, whose sum is σ = 999999000710. Its totient is φ = 999999000708.

The previous prime is 999999000667. The next prime is 999999000719. The reversal of 999999000709 is 907000999999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 941584944609 + 58414056100 = 970353^2 + 241690^2 .

It is a cyclic number.

It is not a de Polignac number, because 999999000709 - 2³⁹ = 450243186821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999999000719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499999500354 + 499999500355.

It is an arithmetic number, because the mean of its divisors is an integer number (499999500355).

Almost surely, 2^999999000709 is an apocalyptic number.

It is an amenable number.

999999000709 is a deficient number, since it is larger than the sum of its proper divisors (1).

999999000709 is an equidigital number, since it uses as much as digits as its factorization.

999999000709 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 70.

The spelling of 999999000709 in words is "nine hundred ninety-nine billion, nine hundred ninety-nine million, seven hundred nine", and thus it is an aban number.