4220145444 has 48 divisors (see below), whose sum is σ = 10225668096. Its totient is φ = 1353165600.

The previous prime is 4220145443. The next prime is 4220145473. The reversal of 4220145444 is 4445410224.

It is not an unprimeable number, because it can be changed into a prime (4220145443) 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 15 ways as a sum of consecutive naturals, for example, 28159 + ... + 96089.

It is an arithmetic number, because the mean of its divisors is an integer number (213034752).

Almost surely, 2^4220145444 is an apocalyptic number.

It is an amenable number.

4220145444 is an abundant number, since it is smaller than the sum of its proper divisors (6005522652).

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

4220145444 is a wasteful number, since it uses less digits than its factorization.

4220145444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68136 (or 68134 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 30.

The square root of 4220145444 is about 64962.6465286013. The cubic root of 4220145444 is about 1616.0041545044.

Adding to 4220145444 its reverse (4445410224), we get a palindrome (8665555668).

The spelling of 4220145444 in words is "four billion, two hundred twenty million, one hundred forty-five thousand, four hundred forty-four".