4445544140 has 12 divisors (see below), whose sum is σ = 9335642736. Its totient is φ = 1778217648.

The previous prime is 4445544139. The next prime is 4445544143. The reversal of 4445544140 is 414455444.

It is a self number, because there is not a number n which added to its sum of digits gives 4445544140.

It is not an unprimeable number, because it can be changed into a prime (4445544143) 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 3 ways as a sum of consecutive naturals, for example, 111138584 + ... + 111138623.

It is an arithmetic number, because the mean of its divisors is an integer number (777970228).

Almost surely, 2^4445544140 is an apocalyptic number.

It is an amenable number.

4445544140 is an abundant number, since it is smaller than the sum of its proper divisors (4890098596).

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

4445544140 is a wasteful number, since it uses less digits than its factorization.

4445544140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222277216 (or 222277214 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 35.

The square root of 4445544140 is about 66674.9138732102. The cubic root of 4445544140 is about 1644.2769758271.

Adding to 4445544140 its reverse (414455444), we get a palindrome (4859999584).

The spelling of 4445544140 in words is "four billion, four hundred forty-five million, five hundred forty-four thousand, one hundred forty".