999328097 has 2 divisors, whose sum is σ = 999328098. Its totient is φ = 999328096.

The previous prime is 999328063. The next prime is 999328111. The reversal of 999328097 is 790823999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 990423841 + 8904256 = 31471^2 + 2984^2 .

It is a cyclic number.

It is not a de Polignac number, because 999328097 - 2²² = 995133793 is a prime.

It is not a weakly prime, because it can be changed into another prime (999328027) 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, 499664048 + 499664049.

It is an arithmetic number, because the mean of its divisors is an integer number (499664049).

Almost surely, 2^999328097 is an apocalyptic number.

It is an amenable number.

999328097 is a deficient number, since it is larger than the sum of its proper divisors (1).

999328097 is an equidigital number, since it uses as much as digits as its factorization.

999328097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2204496, while the sum is 56.

The square root of 999328097 is about 31612.1510973233. The cubic root of 999328097 is about 999.7759821531.

The spelling of 999328097 in words is "nine hundred ninety-nine million, three hundred twenty-eight thousand, ninety-seven".