194839 has 2 divisors, whose sum is σ = 194840. Its totient is φ = 194838.

The previous prime is 194827. The next prime is 194861. The reversal of 194839 is 938491.

It is a weak prime.

It is an emirp because it is prime and its reverse (938491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 194839 - 2¹¹ = 192791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97419 + 97420.

It is an arithmetic number, because the mean of its divisors is an integer number (97420).

2¹⁹⁴⁸³⁹ is an apocalyptic number.

194839 is a deficient number, since it is larger than the sum of its proper divisors (1).

194839 is an equidigital number, since it uses as much as digits as its factorization.

194839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 34.

The square root of 194839 is about 441.4057090705. The cubic root of 194839 is about 57.9729362440.

The spelling of 194839 in words is "one hundred ninety-four thousand, eight hundred thirty-nine".