4421904 has 40 divisors (see below), whose sum is σ = 12097440. Its totient is φ = 1387008.

The previous prime is 4421903. The next prime is 4421909. The reversal of 4421904 is 4091244.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (4421903) 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, 1894 + ... + 3525.

It is an arithmetic number, because the mean of its divisors is an integer number (302436).

Almost surely, 2^4421904 is an apocalyptic number.

It is an amenable number.

4421904 is an abundant number, since it is smaller than the sum of its proper divisors (7675536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4421904 is a wasteful number, since it uses less digits than its factorization.

4421904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5447 (or 5441 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 4421904 is about 2102.8323756305. The cubic root of 4421904 is about 164.1357194994.

It can be divided in two parts, 442 and 1904, that added together give a triangular number (2346 = T₆₈).

The spelling of 4421904 in words is "four million, four hundred twenty-one thousand, nine hundred four".