4400444440 has 32 divisors (see below), whose sum is σ = 11315429280. Its totient is φ = 1508723712.

The previous prime is 4400444423. The next prime is 4400444459. The reversal of 4400444440 is 444440044.

It is a super-2 number, since 2×4400444440² = 38727822539053827200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 4400444399 and 4400444408.

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, 7857657 + ... + 7858216.

It is an arithmetic number, because the mean of its divisors is an integer number (353607165).

Almost surely, 2^4400444440 is an apocalyptic number.

4400444440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4400444440 is an abundant number, since it is smaller than the sum of its proper divisors (6914984840).

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

4400444440 is a wasteful number, since it uses less digits than its factorization.

4400444440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15715891 (or 15715887 counting only the distinct ones).

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

The square root of 4400444440 is about 66335.8458150644. The cubic root of 4400444440 is about 1638.6977119416.

Adding to 4400444440 its reverse (444440044), we get a palindrome (4844884484).

The spelling of 4400444440 in words is "four billion, four hundred million, four hundred forty-four thousand, four hundred forty".