4440134440 has 64 divisors (see below), whose sum is σ = 11494224000. Its totient is φ = 1512100608.

The previous prime is 4440134411. The next prime is 4440134459. The reversal of 4440134440 is 444310444.

It is a super-2 number, since 2×4440134440² = 39429587690548227200, 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 = 4440134399 and 4440134408.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11494 + ... + 94933.

It is an arithmetic number, because the mean of its divisors is an integer number (179597250).

Almost surely, 2^4440134440 is an apocalyptic number.

4440134440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4440134440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5747112000).

4440134440 is an abundant number, since it is smaller than the sum of its proper divisors (7054089560).

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

4440134440 is a wasteful number, since it uses less digits than its factorization.

4440134440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106594 (or 106590 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 4440134440 is about 66634.3337927228. Note that the first 3 decimals coincide. The cubic root of 4440134440 is about 1643.6097417467.

Adding to 4440134440 its reverse (444310444), we get a palindrome (4884444884).

The spelling of 4440134440 in words is "four billion, four hundred forty million, one hundred thirty-four thousand, four hundred forty".