194947199 has 2 divisors, whose sum is σ = 194947200. Its totient is φ = 194947198.

The previous prime is 194947183. The next prime is 194947213. The reversal of 194947199 is 991749491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 194947199 - 2⁴ = 194947183 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 194947199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194947799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97473599 + 97473600.

It is an arithmetic number, because the mean of its divisors is an integer number (97473600).

Almost surely, 2^194947199 is an apocalyptic number.

194947199 is a deficient number, since it is larger than the sum of its proper divisors (1).

194947199 is an equidigital number, since it uses as much as digits as its factorization.

194947199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 53.

The square root of 194947199 is about 13962.3493366983. The cubic root of 194947199 is about 579.8366553494.

The spelling of 194947199 in words is "one hundred ninety-four million, nine hundred forty-seven thousand, one hundred ninety-nine".