199109707 has 2 divisors, whose sum is σ = 199109708. Its totient is φ = 199109706.

The previous prime is 199109699. The next prime is 199109723. The reversal of 199109707 is 707901991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199109707 - 2³ = 199109699 is a prime.

It is not a weakly prime, because it can be changed into another prime (199109747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99554853 + 99554854.

It is an arithmetic number, because the mean of its divisors is an integer number (99554854).

Almost surely, 2^199109707 is an apocalyptic number.

199109707 is a deficient number, since it is larger than the sum of its proper divisors (1).

199109707 is an equidigital number, since it uses as much as digits as its factorization.

199109707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35721, while the sum is 43.

The square root of 199109707 is about 14110.6239054125. The cubic root of 199109707 is about 583.9345126965.

The spelling of 199109707 in words is "one hundred ninety-nine million, one hundred nine thousand, seven hundred seven".