404427 has 8 divisors (see below), whose sum is σ = 544464. Its totient is φ = 267008.

The previous prime is 404423. The next prime is 404429. The reversal of 404427 is 724404.

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 404427 - 2² = 404423 is a prime.

It is a super-2 number, since 2×404427² = 327122396658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (404423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258 + ... + 935.

It is an arithmetic number, because the mean of its divisors is an integer number (68058).

2⁴⁰⁴⁴²⁷ is an apocalyptic number.

404427 is a deficient number, since it is larger than the sum of its proper divisors (140037).

404427 is a wasteful number, since it uses less digits than its factorization.

404427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309.

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 404427 is about 635.9457524035. The cubic root of 404427 is about 73.9514534278.

The spelling of 404427 in words is "four hundred four thousand, four hundred twenty-seven", and thus it is an iban number.