4004489872 has 20 divisors (see below), whose sum is σ = 7968394876. Its totient is φ = 1948129920.

The previous prime is 4004489849. The next prime is 4004489917. The reversal of 4004489872 is 2789844004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1593287056 + 2411202816 = 39916^2 + 49104^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3381579 + ... + 3382762.

Almost surely, 2^4004489872 is an apocalyptic number.

It is an amenable number.

4004489872 is a deficient number, since it is larger than the sum of its proper divisors (3963905004).

4004489872 is a wasteful number, since it uses less digits than its factorization.

4004489872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6764386 (or 6764380 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 46.

The square root of 4004489872 is about 63281.0388031044. The cubic root of 4004489872 is about 1587.9947655101.

The spelling of 4004489872 in words is "four billion, four million, four hundred eighty-nine thousand, eight hundred seventy-two".