404412421 has 4 divisors (see below), whose sum is σ = 462185632. Its totient is φ = 346639212.

The previous prime is 404412413. The next prime is 404412431. The reversal of 404412421 is 124214404.

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 404412421 - 2³ = 404412413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404412392 and 404412401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404412401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28886595 + ... + 28886608.

It is an arithmetic number, because the mean of its divisors is an integer number (115546408).

Almost surely, 2^404412421 is an apocalyptic number.

It is an amenable number.

404412421 is a deficient number, since it is larger than the sum of its proper divisors (57773211).

404412421 is an equidigital number, since it uses as much as digits as its factorization.

404412421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57773210.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 404412421 is about 20110.0079811023. The cubic root of 404412421 is about 739.5056480330.

Adding to 404412421 its reverse (124214404), we get a palindrome (528626825).

The spelling of 404412421 in words is "four hundred four million, four hundred twelve thousand, four hundred twenty-one".