194936939 has 2 divisors, whose sum is σ = 194936940. Its totient is φ = 194936938.

The previous prime is 194936933. The next prime is 194936953. The reversal of 194936939 is 939639491.

194936939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194936939 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (194936933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97468469 + 97468470.

It is an arithmetic number, because the mean of its divisors is an integer number (97468470).

Almost surely, 2^194936939 is an apocalyptic number.

194936939 is a deficient number, since it is larger than the sum of its proper divisors (1).

194936939 is an equidigital number, since it uses as much as digits as its factorization.

194936939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1417176, while the sum is 53.

The square root of 194936939 is about 13961.9819151867. The cubic root of 194936939 is about 579.8264829737.

The spelling of 194936939 in words is "one hundred ninety-four million, nine hundred thirty-six thousand, nine hundred thirty-nine".