4224445 has 8 divisors (see below), whose sum is σ = 5080536. Its totient is φ = 3372096.

The previous prime is 4224443. The next prime is 4224457. The reversal of 4224445 is 5444224.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 606841 + 3617604 = 779^2 + 1902^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4224445 - 2¹ = 4224443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4224443) 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, 3319 + ... + 4411.

It is an arithmetic number, because the mean of its divisors is an integer number (635067).

Almost surely, 2^4224445 is an apocalyptic number.

It is an amenable number.

4224445 is a deficient number, since it is larger than the sum of its proper divisors (856091).

4224445 is a wasteful number, since it uses less digits than its factorization.

4224445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1871.

The product of its digits is 5120, while the sum is 25.

The square root of 4224445 is about 2055.3454697447. The cubic root of 4224445 is about 161.6552772411.

Adding to 4224445 its reverse (5444224), we get a palindrome (9668669).

The spelling of 4224445 in words is "four million, two hundred twenty-four thousand, four hundred forty-five".