404351 has 4 divisors (see below), whose sum is σ = 407400. Its totient is φ = 401304.

The previous prime is 404323. The next prime is 404357. The reversal of 404351 is 153404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 404351 - 2¹⁰ = 403327 is a prime.

It is a super-3 number, since 3×404351³ = 198333839432566653, which contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404357) 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, 1316 + ... + 1593.

It is an arithmetic number, because the mean of its divisors is an integer number (101850).

2⁴⁰⁴³⁵¹ is an apocalyptic number.

404351 is a deficient number, since it is larger than the sum of its proper divisors (3049).

404351 is a wasteful number, since it uses less digits than its factorization.

404351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3048.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 404351 is about 635.8859960716. The cubic root of 404351 is about 73.9468208138.

Adding to 404351 its reverse (153404), we get a palindrome (557755).

The spelling of 404351 in words is "four hundred four thousand, three hundred fifty-one".