404324332421 has 4 divisors (see below), whose sum is σ = 404339751552. Its totient is φ = 404308913292.

The previous prime is 404324332367. The next prime is 404324332441. The reversal of 404324332421 is 124233423404.

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 404324332421 - 2¹⁴ = 404324316037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404324332441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7670165 + ... + 7722698.

It is an arithmetic number, because the mean of its divisors is an integer number (101084937888).

Almost surely, 2^404324332421 is an apocalyptic number.

It is an amenable number.

404324332421 is a deficient number, since it is larger than the sum of its proper divisors (15419131).

404324332421 is a wasteful number, since it uses less digits than its factorization.

404324332421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15419130.

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 404324332421 its reverse (124233423404), we get a palindrome (528557755825).

The spelling of 404324332421 in words is "four hundred four billion, three hundred twenty-four million, three hundred thirty-two thousand, four hundred twenty-one".