4440444240 has 40 divisors (see below), whose sum is σ = 13765377888. Its totient is φ = 1184118400.

The previous prime is 4440444199. The next prime is 4440444257. The reversal of 4440444240 is 424440444.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 4440444198 and 4440444207.

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, 9250686 + ... + 9251165.

Almost surely, 2^4440444240 is an apocalyptic number.

4440444240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4440444240 is an abundant number, since it is smaller than the sum of its proper divisors (9324933648).

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

4440444240 is a wasteful number, since it uses less digits than its factorization.

4440444240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18501867 (or 18501861 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

The square root of 4440444240 is about 66636.6583796036. The cubic root of 4440444240 is about 1643.6479672001.

Adding to 4440444240 its reverse (424440444), we get a palindrome (4864884684).

The spelling of 4440444240 in words is "four billion, four hundred forty million, four hundred forty-four thousand, two hundred forty".