199969711 has 2 divisors, whose sum is σ = 199969712. Its totient is φ = 199969710.

The previous prime is 199969697. The next prime is 199969717. The reversal of 199969711 is 117969991.

It is a strong prime.

It is an emirp because it is prime and its reverse (117969991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199969711 - 2²⁵ = 166415279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199969717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99984855 + 99984856.

It is an arithmetic number, because the mean of its divisors is an integer number (99984856).

Almost surely, 2^199969711 is an apocalyptic number.

199969711 is a deficient number, since it is larger than the sum of its proper divisors (1).

199969711 is an equidigital number, since it uses as much as digits as its factorization.

199969711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 275562, while the sum is 52.

The square root of 199969711 is about 14141.0647053183. The cubic root of 199969711 is about 584.7740242944.

The spelling of 199969711 in words is "one hundred ninety-nine million, nine hundred sixty-nine thousand, seven hundred eleven".