4004424 has 32 divisors (see below), whose sum is σ = 11124000. Its totient is φ = 1334736.

The previous prime is 4004417. The next prime is 4004449. The reversal of 4004424 is 4244004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 4004397 and 4004406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9054 + ... + 9485.

It is an arithmetic number, because the mean of its divisors is an integer number (347625).

Almost surely, 2^4004424 is an apocalyptic number.

It is an amenable number.

4004424 is an abundant number, since it is smaller than the sum of its proper divisors (7119576).

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

4004424 is a wasteful number, since it uses less digits than its factorization.

4004424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18554 (or 18544 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 4004424 is about 2001.1056943600. The cubic root of 4004424 is about 158.7986058203.

Adding to 4004424 its reverse (4244004), we get a palindrome (8248428).

The spelling of 4004424 in words is "four million, four thousand, four hundred twenty-four".