196809199 has 2 divisors, whose sum is σ = 196809200. Its totient is φ = 196809198.

The previous prime is 196809181. The next prime is 196809259. The reversal of 196809199 is 991908691.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196809199 is a prime.

It is a super-2 number, since 2×196809199² = 77467721622043202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196809139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98404599 + 98404600.

It is an arithmetic number, because the mean of its divisors is an integer number (98404600).

Almost surely, 2^196809199 is an apocalyptic number.

196809199 is a deficient number, since it is larger than the sum of its proper divisors (1).

196809199 is an equidigital number, since it uses as much as digits as its factorization.

196809199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 52.

The square root of 196809199 is about 14028.8701968476. The cubic root of 196809199 is about 581.6768743220.

The spelling of 196809199 in words is "one hundred ninety-six million, eight hundred nine thousand, one hundred ninety-nine".