4403421 has 24 divisors (see below), whose sum is σ = 7307040. Its totient is φ = 2527200.

The previous prime is 4403411. The next prime is 4403429. The reversal of 4403421 is 1243044.

It is not a de Polignac number, because 4403421 - 2¹¹ = 4401373 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4403394 and 4403403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4403429) 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 23 ways as a sum of consecutive naturals, for example, 711 + ... + 3051.

It is an arithmetic number, because the mean of its divisors is an integer number (304460).

Almost surely, 2^4403421 is an apocalyptic number.

It is an amenable number.

4403421 is a deficient number, since it is larger than the sum of its proper divisors (2903619).

4403421 is a wasteful number, since it uses less digits than its factorization.

4403421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2377 (or 2374 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 4403421 is about 2098.4329867785. The cubic root of 4403421 is about 163.9067112711.

Adding to 4403421 its reverse (1243044), we get a palindrome (5646465).

The spelling of 4403421 in words is "four million, four hundred three thousand, four hundred twenty-one".