404053221 has 48 divisors (see below), whose sum is σ = 668243520. Its totient is φ = 214064640.

The previous prime is 404053207. The next prime is 404053249. The reversal of 404053221 is 122350404.

It is not a de Polignac number, because 404053221 - 2⁶ = 404053157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404053271) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 153565 + ... + 156173.

It is an arithmetic number, because the mean of its divisors is an integer number (13921740).

Almost surely, 2^404053221 is an apocalyptic number.

It is an amenable number.

404053221 is a deficient number, since it is larger than the sum of its proper divisors (264190299).

404053221 is a wasteful number, since it uses less digits than its factorization.

404053221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2674 (or 2655 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 404053221 is about 20101.0751205004. The cubic root of 404053221 is about 739.2866396657.

The spelling of 404053221 in words is "four hundred four million, fifty-three thousand, two hundred twenty-one".