404047 has 8 divisors (see below), whose sum is σ = 465696. Its totient is φ = 343392.

The previous prime is 404029. The next prime is 404051. The reversal of 404047 is 740404.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-404047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1233 + ... + 1525.

It is an arithmetic number, because the mean of its divisors is an integer number (58212).

2⁴⁰⁴⁰⁴⁷ is an apocalyptic number.

404047 is a deficient number, since it is larger than the sum of its proper divisors (61649).

404047 is a wasteful number, since it uses less digits than its factorization.

404047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497.

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 404047 is about 635.6469145681. The cubic root of 404047 is about 73.9282845507.

The spelling of 404047 in words is "four hundred four thousand, forty-seven", and thus it is an iban number.