4445544 has 32 divisors (see below), whose sum is σ = 11700000. Its totient is φ = 1403712.

The previous prime is 4445543. The next prime is 4445557. The reversal of 4445544 is 4455444.

It is a happy number.

4445544 is nontrivially palindromic in base 7.

It is a super-2 number, since 2×4445544² = 39525722911872, which contains 22 as substring.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (4445543) 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 7 ways as a sum of consecutive naturals, for example, 4419 + ... + 5330.

It is an arithmetic number, because the mean of its divisors is an integer number (365625).

Almost surely, 2^4445544 is an apocalyptic number.

It is an amenable number.

4445544 is an abundant number, since it is smaller than the sum of its proper divisors (7254456).

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

4445544 is a wasteful number, since it uses less digits than its factorization.

4445544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9777 (or 9773 counting only the distinct ones).

The product of its digits is 25600, while the sum is 30.

The square root of 4445544 is about 2108.4458731492. The cubic root of 4445544 is about 164.4276958566.

The spelling of 4445544 in words is "four million, four hundred forty-five thousand, five hundred forty-four".