6449989214 has 16 divisors (see below), whose sum is σ = 9733611888. Its totient is φ = 3205484352.

The previous prime is 6449989213. The next prime is 6449989219. The reversal of 6449989214 is 4129899446.

It is a self number, because there is not a number n which added to its sum of digits gives 6449989214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6449989213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424757 + ... + 439679.

It is an arithmetic number, because the mean of its divisors is an integer number (608350743).

Almost surely, 2^6449989214 is an apocalyptic number.

6449989214 is a deficient number, since it is larger than the sum of its proper divisors (3283622674).

6449989214 is a wasteful number, since it uses less digits than its factorization.

6449989214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16219.

The product of its digits is 4478976, while the sum is 56.

The square root of 6449989214 is about 80311.8248703141. The cubic root of 6449989214 is about 1861.4569474568.

The spelling of 6449989214 in words is "six billion, four hundred forty-nine million, nine hundred eighty-nine thousand, two hundred fourteen".