4445555444 has 24 divisors (see below), whose sum is σ = 8489160288. Its totient is φ = 2020185440.

The previous prime is 4445555441. The next prime is 4445555449.

4445555444 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 4445555395 and 4445555404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4445555441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197579 + ... + 218925.

It is an arithmetic number, because the mean of its divisors is an integer number (353715012).

Almost surely, 2^4445555444 is an apocalyptic number.

4445555444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4445555444 is a deficient number, since it is larger than the sum of its proper divisors (4043604844).

4445555444 is a wasteful number, since it uses less digits than its factorization.

4445555444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26095 (or 26093 counting only the distinct ones).

The product of its digits is 2560000, while the sum is 44.

The square root of 4445555444 is about 66674.9986426697. The cubic root of 4445555444 is about 1644.2783694991.

It can be divided in two parts, 44455 and 55444, that added together give a palindrome (99899).

The spelling of 4445555444 in words is "four billion, four hundred forty-five million, five hundred fifty-five thousand, four hundred forty-four".