404193 has 4 divisors (see below), whose sum is σ = 538928. Its totient is φ = 269460.

The previous prime is 404191. The next prime is 404197. The reversal of 404193 is 391404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 404193 - 2¹ = 404191 is a prime.

It is a D-number.

It is a Duffinian number.

404193 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (404191) 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, 67363 + ... + 67368.

It is an arithmetic number, because the mean of its divisors is an integer number (134732).

2⁴⁰⁴¹⁹³ is an apocalyptic number.

It is an amenable number.

404193 is a deficient number, since it is larger than the sum of its proper divisors (134735).

404193 is a wasteful number, since it uses less digits than its factorization.

404193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134734.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 404193 is about 635.7617478270. The cubic root of 404193 is about 73.9371879949.

Adding to 404193 its reverse (391404), we get a palindrome (795597).

The spelling of 404193 in words is "four hundred four thousand, one hundred ninety-three".