404211005 has 32 divisors (see below), whose sum is σ = 549158400. Its totient is φ = 283046400.

The previous prime is 404210999. The next prime is 404211007. The reversal of 404211005 is 500112404.

It is not a de Polignac number, because 404211005 - 2¹⁴ = 404194621 is a prime.

It is a super-2 number, since 2×404211005² = 326773073126220050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404211007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 177011 + ... + 179279.

It is an arithmetic number, because the mean of its divisors is an integer number (17161200).

Almost surely, 2^404211005 is an apocalyptic number.

It is an amenable number.

404211005 is a deficient number, since it is larger than the sum of its proper divisors (144947395).

404211005 is a wasteful number, since it uses less digits than its factorization.

404211005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 404211005 is about 20104.9995026113. Note that the first 3 decimals coincide. The cubic root of 404211005 is about 739.3828583622.

Adding to 404211005 its reverse (500112404), we get a palindrome (904323409).

The spelling of 404211005 in words is "four hundred four million, two hundred eleven thousand, five".