194442097 has 2 divisors, whose sum is σ = 194442098. Its totient is φ = 194442096.

The previous prime is 194442047. The next prime is 194442109. The reversal of 194442097 is 790244491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193098816 + 1343281 = 13896^2 + 1159^2 .

It is a cyclic number.

It is not a de Polignac number, because 194442097 - 2⁷ = 194441969 is a prime.

It is not a weakly prime, because it can be changed into another prime (194442007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97221048 + 97221049.

It is an arithmetic number, because the mean of its divisors is an integer number (97221049).

Almost surely, 2^194442097 is an apocalyptic number.

It is an amenable number.

194442097 is a deficient number, since it is larger than the sum of its proper divisors (1).

194442097 is an equidigital number, since it uses as much as digits as its factorization.

194442097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 194442097 is about 13944.2496033311. The cubic root of 194442097 is about 579.3354427728.

The spelling of 194442097 in words is "one hundred ninety-four million, four hundred forty-two thousand, ninety-seven".