6444502009 has 8 divisors (see below), whose sum is σ = 7031072160. Its totient is φ = 5858049600.

The previous prime is 6444502007. The next prime is 6444502019. The reversal of 6444502009 is 9002054446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6444502009 - 2¹ = 6444502007 is a prime.

It is a super-2 number, since 2×6444502009² = 83063212288010072162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6444502007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116494 + ... + 162664.

It is an arithmetic number, because the mean of its divisors is an integer number (878884020).

Almost surely, 2^6444502009 is an apocalyptic number.

It is an amenable number.

6444502009 is a deficient number, since it is larger than the sum of its proper divisors (586570151).

6444502009 is a wasteful number, since it uses less digits than its factorization.

6444502009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58871.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 6444502009 is about 80277.6557268584. The cubic root of 6444502009 is about 1860.9289313929.

The spelling of 6444502009 in words is "six billion, four hundred forty-four million, five hundred two thousand, nine".