4400424 has 48 divisors (see below), whose sum is σ = 13621920. Its totient is φ = 1257120.

The previous prime is 4400413. The next prime is 4400443. The reversal of 4400424 is 4240044.

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 = 4400397 and 4400406.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3862 + ... + 4869.

It is an arithmetic number, because the mean of its divisors is an integer number (283790).

Almost surely, 2^4400424 is an apocalyptic number.

It is an amenable number.

4400424 is an abundant number, since it is smaller than the sum of its proper divisors (9221496).

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

4400424 is a wasteful number, since it uses less digits than its factorization.

4400424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8750 (or 8743 counting only the distinct ones).

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

The square root of 4400424 is about 2097.7187609401. The cubic root of 4400424 is about 163.8695174695.

Adding to 4400424 its reverse (4240044), we get a palindrome (8640468).

The spelling of 4400424 in words is "four million, four hundred thousand, four hundred twenty-four".