199997003 has 2 divisors, whose sum is σ = 199997004. Its totient is φ = 199997002.

The previous prime is 199996997. The next prime is 199997009. The reversal of 199997003 is 300799991.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (199996997) and next prime (199997009).

It is an emirp because it is prime and its reverse (300799991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199997003 - 2⁴ = 199996987 is a prime.

It is not a weakly prime, because it can be changed into another prime (199997009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99998501 + 99998502.

It is an arithmetic number, because the mean of its divisors is an integer number (99998502).

Almost surely, 2^199997003 is an apocalyptic number.

199997003 is a deficient number, since it is larger than the sum of its proper divisors (1).

199997003 is an equidigital number, since it uses as much as digits as its factorization.

199997003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 137781, while the sum is 47.

The square root of 199997003 is about 14142.0296633828. The cubic root of 199997003 is about 584.8006265343.

The spelling of 199997003 in words is "one hundred ninety-nine million, nine hundred ninety-seven thousand, three".