6444436384 has 12 divisors (see below), whose sum is σ = 12687484194. Its totient is φ = 3222218176.

The previous prime is 6444436373. The next prime is 6444436387. The reversal of 6444436384 is 4836344446.

It can be written as a sum of positive squares in only one way, i.e., 4232803600 + 2211632784 = 65060^2 + 47028^2 .

It is not an unprimeable number, because it can be changed into a prime (6444436387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100694287 + ... + 100694350.

Almost surely, 2^6444436384 is an apocalyptic number.

It is an amenable number.

6444436384 is a deficient number, since it is larger than the sum of its proper divisors (6243047810).

6444436384 is a wasteful number, since it uses less digits than its factorization.

6444436384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201388647 (or 201388639 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 46.

The square root of 6444436384 is about 80277.2469881722. The cubic root of 6444436384 is about 1860.9226146972.

The spelling of 6444436384 in words is "six billion, four hundred forty-four million, four hundred thirty-six thousand, three hundred eighty-four".