404006 has 8 divisors (see below), whose sum is σ = 613920. Its totient is φ = 199368.

The previous prime is 403993. The next prime is 404009. The reversal of 404006 is 600404.

It is a happy number.

404006 is nontrivially palindromic in base 16.

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

It is a congruent number.

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, 1121 + ... + 1436.

It is an arithmetic number, because the mean of its divisors is an integer number (76740).

2⁴⁰⁴⁰⁰⁶ is an apocalyptic number.

404006 is a deficient number, since it is larger than the sum of its proper divisors (209914).

404006 is a wasteful number, since it uses less digits than its factorization.

404006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 404006 is about 635.6146631411. The cubic root of 404006 is about 73.9257838827.

The spelling of 404006 in words is "four hundred four thousand, six".