4447840540 has 48 divisors (see below), whose sum is σ = 10973420640. Its totient is φ = 1492980480.

The previous prime is 4447840513. The next prime is 4447840651. The reversal of 4447840540 is 450487444.

It is a junction number, because it is equal to n+sod(n) for n = 4447840493 and 4447840502.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 774735 + ... + 780454.

It is an arithmetic number, because the mean of its divisors is an integer number (228612930).

Almost surely, 2^4447840540 is an apocalyptic number.

It is an amenable number.

4447840540 is an abundant number, since it is smaller than the sum of its proper divisors (6525580100).

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

4447840540 is a wasteful number, since it uses less digits than its factorization.

4447840540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555222 (or 1555220 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 40.

The square root of 4447840540 is about 66692.1325195109. The cubic root of 4447840540 is about 1644.5600508606.

The spelling of 4447840540 in words is "four billion, four hundred forty-seven million, eight hundred forty thousand, five hundred forty".