199850039 has 2 divisors, whose sum is σ = 199850040. Its totient is φ = 199850038.

The previous prime is 199850033. The next prime is 199850041. The reversal of 199850039 is 930058991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199850039 - 2⁴ = 199850023 is a prime.

Together with 199850041, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199850033) 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, 99925019 + 99925020.

It is an arithmetic number, because the mean of its divisors is an integer number (99925020).

Almost surely, 2^199850039 is an apocalyptic number.

199850039 is a deficient number, since it is larger than the sum of its proper divisors (1).

199850039 is an equidigital number, since it uses as much as digits as its factorization.

199850039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 44.

The square root of 199850039 is about 14136.8327075056. The cubic root of 199850039 is about 584.6573482215.

The spelling of 199850039 in words is "one hundred ninety-nine million, eight hundred fifty thousand, thirty-nine".