199680907 has 2 divisors, whose sum is σ = 199680908. Its totient is φ = 199680906.

The previous prime is 199680893. The next prime is 199680911. The reversal of 199680907 is 709086991.

It is a strong prime.

It is an emirp because it is prime and its reverse (709086991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199680907 - 2¹¹ = 199678859 is a prime.

It is not a weakly prime, because it can be changed into another prime (199680967) 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, 99840453 + 99840454.

It is an arithmetic number, because the mean of its divisors is an integer number (99840454).

Almost surely, 2^199680907 is an apocalyptic number.

199680907 is a deficient number, since it is larger than the sum of its proper divisors (1).

199680907 is an equidigital number, since it uses as much as digits as its factorization.

199680907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 199680907 is about 14130.8494790653. The cubic root of 199680907 is about 584.4923708959.

The spelling of 199680907 in words is "one hundred ninety-nine million, six hundred eighty thousand, nine hundred seven".