404007 has 4 divisors (see below), whose sum is σ = 538680. Its totient is φ = 269336.

The previous prime is 403993. The next prime is 404009. The reversal of 404007 is 700404.

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 404007 - 2¹¹ = 401959 is a prime.

It is a D-number.

404007 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 404007.

It is not an unprimeable number, because it can be changed into a prime (404009) 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, 67332 + ... + 67337.

It is an arithmetic number, because the mean of its divisors is an integer number (134670).

2⁴⁰⁴⁰⁰⁷ is an apocalyptic number.

404007 is a deficient number, since it is larger than the sum of its proper divisors (134673).

404007 is a wasteful number, since it uses less digits than its factorization.

404007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134672.

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 404007 is about 635.6154497808. The cubic root of 404007 is about 73.9258448767.

The spelling of 404007 in words is "four hundred four thousand, seven", and thus it is an iban number.