999608329 has 2 divisors, whose sum is σ = 999608330. Its totient is φ = 999608328.

The previous prime is 999608293. The next prime is 999608383. The reversal of 999608329 is 923806999.

Together with previous prime (999608293) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 709689600 + 289918729 = 26640^2 + 17027^2 .

It is a cyclic number.

It is not a de Polignac number, because 999608329 - 2¹⁹ = 999084041 is a prime.

It is a super-2 number, since 2×999608329² = 1998433622812344482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 999608329.

It is not a weakly prime, because it can be changed into another prime (999608399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499804164 + 499804165.

It is an arithmetic number, because the mean of its divisors is an integer number (499804165).

Almost surely, 2^999608329 is an apocalyptic number.

It is an amenable number.

999608329 is a deficient number, since it is larger than the sum of its proper divisors (1).

999608329 is an equidigital number, since it uses as much as digits as its factorization.

999608329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1889568, while the sum is 55.

The square root of 999608329 is about 31616.5831329067. The cubic root of 999608329 is about 999.8694259512.

The spelling of 999608329 in words is "nine hundred ninety-nine million, six hundred eight thousand, three hundred twenty-nine".