4400224 has 12 divisors (see below), whose sum is σ = 8663004. Its totient is φ = 2200096.

The previous prime is 4400213. The next prime is 4400261. The reversal of 4400224 is 4220044.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4400198 and 4400207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68722 + ... + 68785.

It is an arithmetic number, because the mean of its divisors is an integer number (721917).

Almost surely, 2^4400224 is an apocalyptic number.

It is an amenable number.

4400224 is a deficient number, since it is larger than the sum of its proper divisors (4262780).

4400224 is a wasteful number, since it uses less digits than its factorization.

4400224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137517 (or 137509 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 4400224 is about 2097.6710895658. The cubic root of 4400224 is about 163.8670347997.

Adding to 4400224 its reverse (4220044), we get a palindrome (8620268).

It can be divided in two parts, 4400 and 224, that added together give a square (4624 = 68²).

The spelling of 4400224 in words is "four million, four hundred thousand, two hundred twenty-four".