4439399656 has 16 divisors (see below), whose sum is σ = 8325806400. Its totient is φ = 2219184624.

The previous prime is 4439399651. The next prime is 4439399677. The reversal of 4439399656 is 6569939344.

It is a self number, because there is not a number n which added to its sum of digits gives 4439399656.

It is not an unprimeable number, because it can be changed into a prime (4439399651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26466 + ... + 97873.

It is an arithmetic number, because the mean of its divisors is an integer number (520362900).

Almost surely, 2^4439399656 is an apocalyptic number.

It is an amenable number.

4439399656 is a deficient number, since it is larger than the sum of its proper divisors (3886406744).

4439399656 is a wasteful number, since it uses less digits than its factorization.

4439399656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128808 (or 128804 counting only the distinct ones).

The product of its digits is 18895680, while the sum is 58.

The square root of 4439399656 is about 66628.8200105630. The cubic root of 4439399656 is about 1643.5190714616.

The spelling of 4439399656 in words is "four billion, four hundred thirty-nine million, three hundred ninety-nine thousand, six hundred fifty-six".