199994603 has 2 divisors, whose sum is σ = 199994604. Its totient is φ = 199994602.

The previous prime is 199994581. The next prime is 199994623. The reversal of 199994603 is 306499991.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199994603 - 2¹² = 199990507 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (199994623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99997301 + 99997302.

It is an arithmetic number, because the mean of its divisors is an integer number (99997302).

Almost surely, 2^199994603 is an apocalyptic number.

199994603 is a deficient number, since it is larger than the sum of its proper divisors (1).

199994603 is an equidigital number, since it uses as much as digits as its factorization.

199994603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 472392, while the sum is 50.

The square root of 199994603 is about 14141.9448096788. The cubic root of 199994603 is about 584.7982872873.

The spelling of 199994603 in words is "one hundred ninety-nine million, nine hundred ninety-four thousand, six hundred three".