199814423 has 2 divisors, whose sum is σ = 199814424. Its totient is φ = 199814422.

The previous prime is 199814411. The next prime is 199814473. The reversal of 199814423 is 324418991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199814423 - 2²² = 195620119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199814473) 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, 99907211 + 99907212.

It is an arithmetic number, because the mean of its divisors is an integer number (99907212).

Almost surely, 2^199814423 is an apocalyptic number.

199814423 is a deficient number, since it is larger than the sum of its proper divisors (1).

199814423 is an equidigital number, since it uses as much as digits as its factorization.

199814423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 41.

The square root of 199814423 is about 14135.5729632725. The cubic root of 199814423 is about 584.6226148562.

The spelling of 199814423 in words is "one hundred ninety-nine million, eight hundred fourteen thousand, four hundred twenty-three".