199899383 has 2 divisors, whose sum is σ = 199899384. Its totient is φ = 199899382.

The previous prime is 199899353. The next prime is 199899421. The reversal of 199899383 is 383998991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199899383 - 2⁸ = 199899127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199899353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99949691 + 99949692.

It is an arithmetic number, because the mean of its divisors is an integer number (99949692).

Almost surely, 2^199899383 is an apocalyptic number.

199899383 is a deficient number, since it is larger than the sum of its proper divisors (1).

199899383 is an equidigital number, since it uses as much as digits as its factorization.

199899383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3779136, while the sum is 59.

The square root of 199899383 is about 14138.5778280561. The cubic root of 199899383 is about 584.7054625614.

The spelling of 199899383 in words is "one hundred ninety-nine million, eight hundred ninety-nine thousand, three hundred eighty-three".