4404421 has 4 divisors (see below), whose sum is σ = 5033632. Its totient is φ = 3775212.

The previous prime is 4404419. The next prime is 4404427. The reversal of 4404421 is 1244044.

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 not a de Polignac number, because 4404421 - 2¹ = 4404419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4404427) 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, 314595 + ... + 314608.

It is an arithmetic number, because the mean of its divisors is an integer number (1258408).

Almost surely, 2^4404421 is an apocalyptic number.

It is an amenable number.

4404421 is a deficient number, since it is larger than the sum of its proper divisors (629211).

4404421 is an equidigital number, since it uses as much as digits as its factorization.

4404421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629210.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 4404421 is about 2098.6712462889. The cubic root of 4404421 is about 163.9191178602.

Adding to 4404421 its reverse (1244044), we get a palindrome (5648465).

The spelling of 4404421 in words is "four million, four hundred four thousand, four hundred twenty-one".