404457 has 8 divisors (see below), whose sum is σ = 556800. Its totient is φ = 260880.

The previous prime is 404449. The next prime is 404461. The reversal of 404457 is 754404.

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

It is not a de Polignac number, because 404457 - 2³ = 404449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (404497) 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, 2082 + ... + 2267.

It is an arithmetic number, because the mean of its divisors is an integer number (69600).

2⁴⁰⁴⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

404457 is a deficient number, since it is larger than the sum of its proper divisors (152343).

404457 is a wasteful number, since it uses less digits than its factorization.

404457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4383.

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 404457 is about 635.9693388836. The cubic root of 404457 is about 73.9532819314.

It can be divided in two parts, 404 and 457, that added together give a triangular number (861 = T₄₁).

The spelling of 404457 in words is "four hundred four thousand, four hundred fifty-seven".