4442445 has 40 divisors (see below), whose sum is σ = 9106944. Its totient is φ = 2029536.

The previous prime is 4442443. The next prime is 4442453. The reversal of 4442445 is 5442444.

It is a happy number.

It is not a de Polignac number, because 4442445 - 2¹ = 4442443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4442441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2052 + ... + 3618.

Almost surely, 2^4442445 is an apocalyptic number.

4442445 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4442445 is an abundant number, since it is smaller than the sum of its proper divisors (4664499).

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

4442445 is a wasteful number, since it uses less digits than its factorization.

4442445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591 (or 1582 counting only the distinct ones).

The product of its digits is 10240, while the sum is 27.

The square root of 4442445 is about 2107.7108435457. The cubic root of 4442445 is about 164.3894793204.

Adding to 4442445 its reverse (5442444), we get a palindrome (9884889).

Subtracting 4442445 from its reverse (5442444), we obtain a palindrome (999999).

The spelling of 4442445 in words is "four million, four hundred forty-two thousand, four hundred forty-five".