197106199 has 2 divisors, whose sum is σ = 197106200. Its totient is φ = 197106198.

The previous prime is 197106191. The next prime is 197106271. The reversal of 197106199 is 991601791.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (991601791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197106199 - 2³ = 197106191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197106191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98553099 + 98553100.

It is an arithmetic number, because the mean of its divisors is an integer number (98553100).

Almost surely, 2^197106199 is an apocalyptic number.

197106199 is a deficient number, since it is larger than the sum of its proper divisors (1).

197106199 is an equidigital number, since it uses as much as digits as its factorization.

197106199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30618, while the sum is 43.

The square root of 197106199 is about 14039.4515206257. The cubic root of 197106199 is about 581.9693254264.

The spelling of 197106199 in words is "one hundred ninety-seven million, one hundred six thousand, one hundred ninety-nine".