4448643972 has 24 divisors (see below), whose sum is σ = 10411538592. Its totient is φ = 1478400000.

The previous prime is 4448643961. The next prime is 4448643989. The reversal of 4448643972 is 2793468444.

It is a super-2 number, since 2×4448643972² = 39580866379223873568, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556029 + ... + 563972.

It is an arithmetic number, because the mean of its divisors is an integer number (433814108).

Almost surely, 2^4448643972 is an apocalyptic number.

It is an amenable number.

4448643972 is an abundant number, since it is smaller than the sum of its proper divisors (5962894620).

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

4448643972 is a wasteful number, since it uses less digits than its factorization.

4448643972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120339 (or 1120337 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 51.

The square root of 4448643972 is about 66698.1556866455. The cubic root of 4448643972 is about 1644.6590661475.

The spelling of 4448643972 in words is "four billion, four hundred forty-eight million, six hundred forty-three thousand, nine hundred seventy-two".