404230221 has 24 divisors (see below), whose sum is σ = 622252800. Its totient is φ = 252279456.

The previous prime is 404230219. The next prime is 404230231. The reversal of 404230221 is 122032404.

It is not a de Polignac number, because 404230221 - 2¹ = 404230219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404230194 and 404230203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404230231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11046 + ... + 30503.

It is an arithmetic number, because the mean of its divisors is an integer number (25927200).

Almost surely, 2^404230221 is an apocalyptic number.

It is an amenable number.

404230221 is a deficient number, since it is larger than the sum of its proper divisors (218022579).

404230221 is a wasteful number, since it uses less digits than its factorization.

404230221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41625 (or 41622 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 404230221 is about 20105.4773880154. The cubic root of 404230221 is about 739.3945748137.

Adding to 404230221 its reverse (122032404), we get a palindrome (526262625).

The spelling of 404230221 in words is "four hundred four million, two hundred thirty thousand, two hundred twenty-one".