4408640872 has 32 divisors (see below), whose sum is σ = 8989011720. Its totient is φ = 2018580480.

The previous prime is 4408640839. The next prime is 4408640879. The reversal of 4408640872 is 2780468044.

It can be written as a sum of positive squares in 4 ways, for example, as 3832352836 + 576288036 = 61906^2 + 24006^2 .

It is a super-2 number, since 2×4408640872² = 38872228676537840768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4408640879) by changing a digit.

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, 433029 + ... + 443092.

Almost surely, 2^4408640872 is an apocalyptic number.

It is an amenable number.

4408640872 is an abundant number, since it is smaller than the sum of its proper divisors (4580370848).

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

4408640872 is a wasteful number, since it uses less digits than its factorization.

4408640872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876181 (or 876177 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 43.

The square root of 4408640872 is about 66397.5968842247. The cubic root of 4408640872 is about 1639.7145140581.

The spelling of 4408640872 in words is "four billion, four hundred eight million, six hundred forty thousand, eight hundred seventy-two".