4221404 has 24 divisors (see below), whose sum is σ = 8280048. Its totient is φ = 1866240.

The previous prime is 4221379. The next prime is 4221407. The reversal of 4221404 is 4041224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332 + ... + 2924.

It is an arithmetic number, because the mean of its divisors is an integer number (345002).

Almost surely, 2^4221404 is an apocalyptic number.

4221404 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4221404 is a deficient number, since it is larger than the sum of its proper divisors (4058644).

4221404 is a wasteful number, since it uses less digits than its factorization.

4221404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2645 (or 2643 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 4221404 is about 2054.6055582520. The cubic root of 4221404 is about 161.6164783216.

Adding to 4221404 its reverse (4041224), we get a palindrome (8262628).

The spelling of 4221404 in words is "four million, two hundred twenty-one thousand, four hundred four".