199109699 has 2 divisors, whose sum is σ = 199109700. Its totient is φ = 199109698.

The previous prime is 199109681. The next prime is 199109707. The reversal of 199109699 is 996901991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199109699 - 2¹² = 199105603 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199109699.

It is not a weakly prime, because it can be changed into another prime (199109399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99554849 + 99554850.

It is an arithmetic number, because the mean of its divisors is an integer number (99554850).

Almost surely, 2^199109699 is an apocalyptic number.

199109699 is a deficient number, since it is larger than the sum of its proper divisors (1).

199109699 is an equidigital number, since it uses as much as digits as its factorization.

199109699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 354294, while the sum is 53.

The square root of 199109699 is about 14110.6236219382. The cubic root of 199109699 is about 583.9345048759.

The spelling of 199109699 in words is "one hundred ninety-nine million, one hundred nine thousand, six hundred ninety-nine".