194399 has 4 divisors (see below), whose sum is σ = 197136. Its totient is φ = 191664.

The previous prime is 194377. The next prime is 194413. The reversal of 194399 is 993491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993491 = 19 ⋅52289.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1259 + ... + 1404.

It is an arithmetic number, because the mean of its divisors is an integer number (49284).

2¹⁹⁴³⁹⁹ is an apocalyptic number.

194399 is a deficient number, since it is larger than the sum of its proper divisors (2737).

194399 is an equidigital number, since it uses as much as digits as its factorization.

194399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736.

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

The square root of 194399 is about 440.9070196765. The cubic root of 194399 is about 57.9292637460.

The spelling of 194399 in words is "one hundred ninety-four thousand, three hundred ninety-nine".