194939 has 4 divisors (see below), whose sum is σ = 206424. Its totient is φ = 183456.

The previous prime is 194933. The next prime is 194963. The reversal of 194939 is 939491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939491 = 7 ⋅134213.

It is a cyclic number.

It is not a de Polignac number, because 194939 - 2⁸ = 194683 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 194899 and 194908.

It is not an unprimeable number, because it can be changed into a prime (194933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5717 + ... + 5750.

It is an arithmetic number, because the mean of its divisors is an integer number (51606).

2¹⁹⁴⁹³⁹ is an apocalyptic number.

194939 is a deficient number, since it is larger than the sum of its proper divisors (11485).

194939 is a wasteful number, since it uses less digits than its factorization.

194939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11484.

The product of its digits is 8748, while the sum is 35.

The square root of 194939 is about 441.5189690149. The cubic root of 194939 is about 57.9828526401.

The spelling of 194939 in words is "one hundred ninety-four thousand, nine hundred thirty-nine".