4421751840 has 576 divisors, whose sum is σ = 17577181440. Its totient is φ = 1001594880.

The previous prime is 4421751809. The next prime is 4421751847. The reversal of 4421751840 is 481571244.

It is a happy number.

4421751840 is a `hidden beast` number, since 442 + 175 + 1 + 8 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 4421751795 and 4421751804.

It is not an unprimeable number, because it can be changed into a prime (4421751847) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19308846 + ... + 19309074.

It is an arithmetic number, because the mean of its divisors is an integer number (30515940).

Almost surely, 2^4421751840 is an apocalyptic number.

4421751840 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 4421751840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8788590720).

4421751840 is an abundant number, since it is smaller than the sum of its proper divisors (13155429600).

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

4421751840 is a wasteful number, since it uses less digits than its factorization.

4421751840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 4421751840 is about 66496.2543306012. The cubic root of 4421751840 is about 1641.3383681284.

The spelling of 4421751840 in words is "four billion, four hundred twenty-one million, seven hundred fifty-one thousand, eight hundred forty".