199599403 has 2 divisors, whose sum is σ = 199599404. Its totient is φ = 199599402.

The previous prime is 199599353. The next prime is 199599469. The reversal of 199599403 is 304995991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199599403 - 2⁹ = 199598891 is a prime.

It is not a weakly prime, because it can be changed into another prime (199599473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99799701 + 99799702.

It is an arithmetic number, because the mean of its divisors is an integer number (99799702).

Almost surely, 2^199599403 is an apocalyptic number.

199599403 is a deficient number, since it is larger than the sum of its proper divisors (1).

199599403 is an equidigital number, since it uses as much as digits as its factorization.

199599403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 393660, while the sum is 49.

The square root of 199599403 is about 14127.9652816674. The cubic root of 199599403 is about 584.4128357517.

It can be divided in two parts, 199599 and 403, that added together give a palindrome (200002).

The spelling of 199599403 in words is "one hundred ninety-nine million, five hundred ninety-nine thousand, four hundred three".