4440660642 has 24 divisors (see below), whose sum is σ = 10496107440. Its totient is φ = 1345654680.

The previous prime is 4440660619. The next prime is 4440660659. The reversal of 4440660642 is 2460660444.

It is a happy number.

4440660642 is a `hidden beast` number, since 4 + 4 + 4 + 0 + 6 + 6 + 0 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 4440660597 and 4440660606.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11213592 + ... + 11213987.

It is an arithmetic number, because the mean of its divisors is an integer number (437337810).

Almost surely, 2^4440660642 is an apocalyptic number.

4440660642 is an abundant number, since it is smaller than the sum of its proper divisors (6055446798).

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

4440660642 is a wasteful number, since it uses less digits than its factorization.

4440660642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22427598 (or 22427595 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

The square root of 4440660642 is about 66638.2821057086. The cubic root of 4440660642 is about 1643.6746674512.

The spelling of 4440660642 in words is "four billion, four hundred forty million, six hundred sixty thousand, six hundred forty-two".