404396005 has 32 divisors (see below), whose sum is σ = 548222976. Its totient is φ = 284131584.

The previous prime is 404395993. The next prime is 404396033. The reversal of 404396005 is 500693404.

It is a cyclic number.

It is not a de Polignac number, because 404396005 - 2⁵ = 404395973 is a prime.

It is a super-2 number, since 2×404396005² = 327072257719920050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 332779 + ... + 333991.

It is an arithmetic number, because the mean of its divisors is an integer number (17131968).

Almost surely, 2^404396005 is an apocalyptic number.

It is an amenable number.

404396005 is a deficient number, since it is larger than the sum of its proper divisors (143826971).

404396005 is a wasteful number, since it uses less digits than its factorization.

404396005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 404396005 is about 20109.5998219756. The cubic root of 404396005 is about 739.4956418377.

The spelling of 404396005 in words is "four hundred four million, three hundred ninety-six thousand, five".