194393 has 4 divisors (see below), whose sum is σ = 195300. Its totient is φ = 193488.

The previous prime is 194377. The next prime is 194413. The reversal of 194393 is 393491.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 73984 + 120409 = 272^2 + 347^2 .

It is a cyclic number.

It is not a de Polignac number, because 194393 - 2⁴ = 194377 is a prime.

It is a d-powerful number, because it can be written as 1 + 9⁴ + 3³ + 4⁶ + 9⁴ + 3¹¹ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194323) 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, 71 + ... + 627.

It is an arithmetic number, because the mean of its divisors is an integer number (48825).

2¹⁹⁴³⁹³ is an apocalyptic number.

It is an amenable number.

194393 is a deficient number, since it is larger than the sum of its proper divisors (907).

194393 is an equidigital number, since it uses as much as digits as its factorization.

194393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906.

The product of its digits is 2916, while the sum is 29.

The square root of 194393 is about 440.9002154683. The cubic root of 194393 is about 57.9286677567.

The spelling of 194393 in words is "one hundred ninety-four thousand, three hundred ninety-three".