999930193 has 2 divisors, whose sum is σ = 999930194. Its totient is φ = 999930192.

The previous prime is 999930163. The next prime is 999930227. The reversal of 999930193 is 391039999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 952154449 + 47775744 = 30857^2 + 6912^2 .

It is a cyclic number.

It is not a de Polignac number, because 999930193 - 2²⁹ = 463059281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 999930193.

It is not a weakly prime, because it can be changed into another prime (999930163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499965096 + 499965097.

It is an arithmetic number, because the mean of its divisors is an integer number (499965097).

Almost surely, 2^999930193 is an apocalyptic number.

It is an amenable number.

999930193 is a deficient number, since it is larger than the sum of its proper divisors (1).

999930193 is an equidigital number, since it uses as much as digits as its factorization.

999930193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 531441, while the sum is 52.

The square root of 999930193 is about 31621.6728368377. The cubic root of 999930193 is about 999.9767304585.

The spelling of 999930193 in words is "nine hundred ninety-nine million, nine hundred thirty thousand, one hundred ninety-three".