394112746764 has 144 divisors (see below), whose sum is σ = 1125817056000. Its totient is φ = 115151379840.

The previous prime is 394112746763. The next prime is 394112746787. The reversal of 394112746764 is 467647211493.

394112746764 is a `hidden beast` number, since 3 + 9 + 4 + 112 + 7 + 467 + 64 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 394112746764.

It is not an unprimeable number, because it can be changed into a prime (394112746763) 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 47 ways as a sum of consecutive naturals, for example, 8463457 + ... + 8509895.

It is an arithmetic number, because the mean of its divisors is an integer number (7818174000).

Almost surely, 2^394112746764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394112746764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (562908528000).

394112746764 is an abundant number, since it is smaller than the sum of its proper divisors (731704309236).

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

394112746764 is a wasteful number, since it uses less digits than its factorization.

394112746764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47228 (or 47223 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 54.

The spelling of 394112746764 in words is "three hundred ninety-four billion, one hundred twelve million, seven hundred forty-six thousand, seven hundred sixty-four".