4444404440 has 32 divisors (see below), whose sum is σ = 11428469280. Its totient is φ = 1523795712.

The previous prime is 4444404439. The next prime is 4444404467. The reversal of 4444404440 is 444044444.

It is a junction number, because it is equal to n+sod(n) for n = 4444404397 and 4444404406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7936157 + ... + 7936716.

It is an arithmetic number, because the mean of its divisors is an integer number (357139665).

Almost surely, 2^4444404440 is an apocalyptic number.

4444404440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4444404440 is an abundant number, since it is smaller than the sum of its proper divisors (6984064840).

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

4444404440 is a wasteful number, since it uses less digits than its factorization.

4444404440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15872891 (or 15872887 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

The square root of 4444404440 is about 66666.3666326582. The cubic root of 4444404440 is about 1644.1364499000.

Adding to 4444404440 its reverse (444044444), we get a palindrome (4888448884).

It can be divided in two parts, 4 and 444404440, that added together give a palindrome (444404444).

The spelling of 4444404440 in words is "four billion, four hundred forty-four million, four hundred four thousand, four hundred forty".