6449440833 has 32 divisors (see below), whose sum is σ = 10876538880. Its totient is φ = 3738802320.

The previous prime is 6449440831. The next prime is 6449440843. The reversal of 6449440833 is 3380449446.

It is a happy number.

It is not a de Polignac number, because 6449440833 - 2¹ = 6449440831 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6449440831) 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 31 ways as a sum of consecutive naturals, for example, 465241 + ... + 478902.

It is an arithmetic number, because the mean of its divisors is an integer number (339891840).

Almost surely, 2^6449440833 is an apocalyptic number.

It is an amenable number.

6449440833 is a deficient number, since it is larger than the sum of its proper divisors (4427098047).

6449440833 is a wasteful number, since it uses less digits than its factorization.

6449440833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944186 (or 944180 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 45.

The square root of 6449440833 is about 80308.4107239086. The cubic root of 6449440833 is about 1861.4041919911.

The spelling of 6449440833 in words is "six billion, four hundred forty-nine million, four hundred forty thousand, eight hundred thirty-three".