404416321 has 4 divisors (see below), whose sum is σ = 404506672. Its totient is φ = 404325972.

The previous prime is 404416307. The next prime is 404416361. The reversal of 404416321 is 123614404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 404416321 - 2⁷ = 404416193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404416361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38091 + ... + 47536.

It is an arithmetic number, because the mean of its divisors is an integer number (101126668).

Almost surely, 2^404416321 is an apocalyptic number.

It is an amenable number.

404416321 is a deficient number, since it is larger than the sum of its proper divisors (90351).

404416321 is an equidigital number, since it uses as much as digits as its factorization.

404416321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90350.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 404416321 is about 20110.1049475133. The cubic root of 404416321 is about 739.5080251960.

The spelling of 404416321 in words is "four hundred four million, four hundred sixteen thousand, three hundred twenty-one".