394839468252 has 18 divisors (see below), whose sum is σ = 998066433728. Its totient is φ = 131613156072.

The previous prime is 394839468251. The next prime is 394839468259. The reversal of 394839468252 is 252864938493.

It is a happy number.

394839468252 is a `hidden beast` number, since 3 + 9 + 483 + 94 + 68 + 2 + 5 + 2 = 666.

394839468252 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 394839468252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394839468251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5483881468 + ... + 5483881539.

Almost surely, 2^394839468252 is an apocalyptic number.

It is an amenable number.

394839468252 is an abundant number, since it is smaller than the sum of its proper divisors (603226965476).

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

394839468252 is a wasteful number, since it uses less digits than its factorization.

394839468252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10967763017 (or 10967763012 counting only the distinct ones).

The product of its digits is 89579520, while the sum is 63.

The spelling of 394839468252 in words is "three hundred ninety-four billion, eight hundred thirty-nine million, four hundred sixty-eight thousand, two hundred fifty-two".