199434199403 has 2 divisors, whose sum is σ = 199434199404.
Its totient is φ = 199434199402.
The previous prime is 199434199399. The next prime is 199434199507. The reversal of 199434199403 is 304991434991.
It is a happy number.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 199434199403 - 22 = 199434199399 is a prime.
It is not a weakly prime, because it can be changed into another prime (199434199303) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99717099701 + 99717099702.
It is an arithmetic number, because the mean of its divisors is an integer number (99717099702).
Almost surely, 2199434199403 is an apocalyptic number.
199434199403 is a deficient number, since it is larger than the sum of its proper divisors (1).
199434199403 is an equidigital number, since it uses as much as digits as its factorization.
199434199403 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 3779136, while the sum is 56.
The spelling of 199434199403 in words is "one hundred ninety-nine billion, four hundred thirty-four million, one hundred ninety-nine thousand, four hundred three".