4444400044 has 12 divisors (see below), whose sum is σ = 8888800144. Its totient is φ = 1904742864.

The previous prime is 4444400021. The next prime is 4444400047. The reversal of 4444400044 is 4400044444.

4444400044 is an admirable number.

It is a super-2 number, since 2×4444400044² = 39505383502214403872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 158728573 = 4444400044 / (4 + 4 + 4 + 4 + 4 + 0 + 0 + 0 + 4 + 4).

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 4444399985 and 4444400021.

It is not an unprimeable number, because it can be changed into a prime (4444400047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79364259 + ... + 79364314.

Almost surely, 2^4444400044 is an apocalyptic number.

It is an amenable number.

4444400044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

4444400044 is a wasteful number, since it uses less digits than its factorization.

4444400044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158728584 (or 158728582 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

The square root of 4444400044 is about 66666.3336625016. Note that the first 3 decimals coincide. The cubic root of 4444400044 is about 1644.1359078231.

Adding to 4444400044 its reverse (4400044444), we get a palindrome (8844444488).

Subtracting from 4444400044 its reverse (4400044444), we obtain a square (44355600 = 6660²).

The spelling of 4444400044 in words is "four billion, four hundred forty-four million, four hundred thousand, forty-four".