404471 has 4 divisors (see below), whose sum is σ = 405744. Its totient is φ = 403200.

The previous prime is 404461. The next prime is 404483. The reversal of 404471 is 174404.

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 is a cyclic number.

It is not a de Polignac number, because 404471 - 2¹⁸ = 142327 is a prime.

It is a super-3 number, since 3×404471³ = 198510471551337333, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404431) 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, 311 + ... + 951.

It is an arithmetic number, because the mean of its divisors is an integer number (101436).

2⁴⁰⁴⁴⁷¹ is an apocalyptic number.

404471 is a deficient number, since it is larger than the sum of its proper divisors (1273).

404471 is an equidigital number, since it uses as much as digits as its factorization.

404471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 404471 is about 635.9803456083. The cubic root of 404471 is about 73.9541352022.

Adding to 404471 its reverse (174404), we get a palindrome (578875).

The spelling of 404471 in words is "four hundred four thousand, four hundred seventy-one", and thus it is an iban number.