438639949216 has 48 divisors (see below), whose sum is σ = 987193823616. Its totient is φ = 187940180736.

The previous prime is 438639949177. The next prime is 438639949217. The reversal of 438639949216 is 612949936834.

It is not an unprimeable number, because it can be changed into a prime (438639949217) 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, 627445 + ... + 1127371.

It is an arithmetic number, because the mean of its divisors is an integer number (20566537992).

Almost surely, 2^438639949216 is an apocalyptic number.

It is an amenable number.

438639949216 is an abundant number, since it is smaller than the sum of its proper divisors (548553874400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

438639949216 is a wasteful number, since it uses less digits than its factorization.

438639949216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503861 (or 503853 counting only the distinct ones).

The product of its digits is 60466176, while the sum is 64.

The spelling of 438639949216 in words is "four hundred thirty-eight billion, six hundred thirty-nine million, nine hundred forty-nine thousand, two hundred sixteen".