4439928645 has 24 divisors (see below), whose sum is σ = 8100924000. Its totient is φ = 2243331936.

The previous prime is 4439928637. The next prime is 4439928653. The reversal of 4439928645 is 5468299344.

4439928645 is a `hidden beast` number, since 4 + 439 + 92 + 86 + 45 = 666.

It is an interprime number because it is at equal distance from previous prime (4439928637) and next prime (4439928653).

It is not a de Polignac number, because 4439928645 - 2³ = 4439928637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4439928591 and 4439928600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2595595 + ... + 2597304.

It is an arithmetic number, because the mean of its divisors is an integer number (337538500).

Almost surely, 2^4439928645 is an apocalyptic number.

4439928645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4439928645 is a deficient number, since it is larger than the sum of its proper divisors (3660995355).

4439928645 is a wasteful number, since it uses less digits than its factorization.

4439928645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5192929 (or 5192926 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The square root of 4439928645 is about 66632.7895633974. The cubic root of 4439928645 is about 1643.5843482293.

The spelling of 4439928645 in words is "four billion, four hundred thirty-nine million, nine hundred twenty-eight thousand, six hundred forty-five".