404071 has 4 divisors (see below), whose sum is σ = 413512. Its totient is φ = 394632.

The previous prime is 404051. The next prime is 404081. The reversal of 404071 is 170404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 404071 - 2¹¹ = 402023 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 (404011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4656 + ... + 4741.

It is an arithmetic number, because the mean of its divisors is an integer number (103378).

2⁴⁰⁴⁰⁷¹ is an apocalyptic number.

404071 is a deficient number, since it is larger than the sum of its proper divisors (9441).

404071 is an equidigital number, since it uses as much as digits as its factorization.

404071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9440.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 404071 is about 635.6657926930. The cubic root of 404071 is about 73.9297482779.

Adding to 404071 its reverse (170404), we get a palindrome (574475).

The spelling of 404071 in words is "four hundred four thousand, seventy-one", and thus it is an iban number.