199800393839 has 2 divisors, whose sum is σ = 199800393840. Its totient is φ = 199800393838.

The previous prime is 199800393829. The next prime is 199800393889. The reversal of 199800393839 is 938393008991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199800393839 - 2¹² = 199800389743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199800393829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99900196919 + 99900196920.

It is an arithmetic number, because the mean of its divisors is an integer number (99900196920).

Almost surely, 2^199800393839 is an apocalyptic number.

199800393839 is a deficient number, since it is larger than the sum of its proper divisors (1).

199800393839 is an equidigital number, since it uses as much as digits as its factorization.

199800393839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11337408, while the sum is 62.

The spelling of 199800393839 in words is "one hundred ninety-nine billion, eight hundred million, three hundred ninety-three thousand, eight hundred thirty-nine".