404447 has 8 divisors (see below), whose sum is σ = 440496. Its totient is φ = 369792.

The previous prime is 404431. The next prime is 404449. The reversal of 404447 is 744404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 404447 - 2⁴ = 404431 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 (404449) 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 7 ways as a sum of consecutive naturals, for example, 308 + ... + 950.

It is an arithmetic number, because the mean of its divisors is an integer number (55062).

2⁴⁰⁴⁴⁴⁷ is an apocalyptic number.

404447 is a deficient number, since it is larger than the sum of its proper divisors (36049).

404447 is a wasteful number, since it uses less digits than its factorization.

404447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697.

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 404447 is about 635.9614768207. The cubic root of 404447 is about 73.9526724403.

The spelling of 404447 in words is "four hundred four thousand, four hundred forty-seven", and thus it is an iban number.