4455444 has 96 divisors (see below), whose sum is σ = 12902400. Its totient is φ = 1169280.

The previous prime is 4455403. The next prime is 4455461. The reversal of 4455444 is 4445544.

It is a happy number.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 75487 + ... + 75545.

It is an arithmetic number, because the mean of its divisors is an integer number (134400).

Almost surely, 2^4455444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4455444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6451200).

4455444 is an abundant number, since it is smaller than the sum of its proper divisors (8446956).

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

4455444 is a wasteful number, since it uses less digits than its factorization.

4455444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 131 counting only the distinct ones).

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

The square root of 4455444 is about 2110.7922683201. The cubic root of 4455444 is about 164.5496627306.

The spelling of 4455444 in words is "four million, four hundred fifty-five thousand, four hundred forty-four".