838687439052 has 18 divisors (see below), whose sum is σ = 2120015471028. Its totient is φ = 279562479672.

The previous prime is 838687438909. The next prime is 838687439053. The reversal of 838687439052 is 250934786838.

838687439052 is a `hidden beast` number, since 8 + 386 + 87 + 43 + 90 + 52 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (838687439053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11648436618 + ... + 11648436689.

Almost surely, 2^838687439052 is an apocalyptic number.

It is an amenable number.

838687439052 is an abundant number, since it is smaller than the sum of its proper divisors (1281328031976).

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

838687439052 is a wasteful number, since it uses less digits than its factorization.

838687439052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23296873317 (or 23296873312 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 63.

The spelling of 838687439052 in words is "eight hundred thirty-eight billion, six hundred eighty-seven million, four hundred thirty-nine thousand, fifty-two".