4004421444 has 36 divisors (see below), whose sum is σ = 10126656540. Its totient is φ = 1334231040.

The previous prime is 4004421439. The next prime is 4004421461. The reversal of 4004421444 is 4441244004.

4004421444 is a `hidden beast` number, since 400 + 4 + 4 + 214 + 44 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2165040900 + 1839380544 = 46530^2 + 42888^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×4004421444² = 32070782202334090272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65092 + ... + 110660.

It is an arithmetic number, because the mean of its divisors is an integer number (281296015).

Almost surely, 2^4004421444 is an apocalyptic number.

It is an amenable number.

4004421444 is an abundant number, since it is smaller than the sum of its proper divisors (6122235096).

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

4004421444 is a wasteful number, since it uses less digits than its factorization.

4004421444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48020 (or 48015 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

The square root of 4004421444 is about 63280.4981333112. The cubic root of 4004421444 is about 1587.9857203360.

Adding to 4004421444 its reverse (4441244004), we get a palindrome (8445665448).

The spelling of 4004421444 in words is "four billion, four million, four hundred twenty-one thousand, four hundred forty-four".