4440445 has 8 divisors (see below), whose sum is σ = 5344344. Its totient is φ = 3541824.

The previous prime is 4440439. The next prime is 4440461. The reversal of 4440445 is 5440444.

It can be written as a sum of positive squares in 4 ways, for example, as 1279161 + 3161284 = 1131^2 + 1778^2 .

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 4440445 - 2³ = 4440437 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 867 + ... + 3103.

It is an arithmetic number, because the mean of its divisors is an integer number (668043).

Almost surely, 2^4440445 is an apocalyptic number.

It is an amenable number.

4440445 is a deficient number, since it is larger than the sum of its proper divisors (903899).

4440445 is a wasteful number, since it uses less digits than its factorization.

4440445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639.

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

The square root of 4440445 is about 2107.2363417519. The cubic root of 4440445 is about 164.3648060972.

Adding to 4440445 its reverse (5440444), we get a palindrome (9880889).

Subtracting 4440445 from its reverse (5440444), we obtain a palindrome (999999).

The spelling of 4440445 in words is "four million, four hundred forty thousand, four hundred forty-five".