109666199 has 2 divisors, whose sum is σ = 109666200. Its totient is φ = 109666198.

The previous prime is 109666177. The next prime is 109666213. The reversal of 109666199 is 991666901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 109666199 - 2¹² = 109662103 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109666159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54833099 + 54833100.

It is an arithmetic number, because the mean of its divisors is an integer number (54833100).

Almost surely, 2^109666199 is an apocalyptic number.

109666199 is a deficient number, since it is larger than the sum of its proper divisors (1).

109666199 is an equidigital number, since it uses as much as digits as its factorization.

109666199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 47.

The square root of 109666199 is about 10472.1630525885. The cubic root of 109666199 is about 478.6568338047.

The spelling of 109666199 in words is "one hundred nine million, six hundred sixty-six thousand, one hundred ninety-nine".