4438640755 has 16 divisors (see below), whose sum is σ = 5759683200. Its totient is φ = 3270925312.

The previous prime is 4438640753. The next prime is 4438640777. The reversal of 4438640755 is 5570468344.

It is a cyclic number.

It is not a de Polignac number, because 4438640755 - 2¹ = 4438640753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4438640753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 551530 + ... + 559519.

It is an arithmetic number, because the mean of its divisors is an integer number (359980200).

Almost surely, 2^4438640755 is an apocalyptic number.

4438640755 is a deficient number, since it is larger than the sum of its proper divisors (1321042445).

4438640755 is a wasteful number, since it uses less digits than its factorization.

4438640755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111118.

The product of its (nonzero) digits is 1612800, while the sum is 46.

The square root of 4438640755 is about 66623.1247766119. The cubic root of 4438640755 is about 1643.4254147030.

The spelling of 4438640755 in words is "four billion, four hundred thirty-eight million, six hundred forty thousand, seven hundred fifty-five".