394473117852 has 432 divisors, whose sum is σ = 1190843506944. Its totient is φ = 114107162400.

The previous prime is 394473117851. The next prime is 394473117887. The reversal of 394473117852 is 258711374493.

394473117852 is a `hidden beast` number, since 3 + 9 + 4 + 473 + 117 + 8 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394473117851) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 803407327 + ... + 803407817.

It is an arithmetic number, because the mean of its divisors is an integer number (2756582192).

Almost surely, 2^394473117852 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 394473117852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (595421753472).

394473117852 is an abundant number, since it is smaller than the sum of its proper divisors (796370389092).

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

394473117852 is an equidigital number, since it uses as much as digits as its factorization.

394473117852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575 (or 530 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The spelling of 394473117852 in words is "three hundred ninety-four billion, four hundred seventy-three million, one hundred seventeen thousand, eight hundred fifty-two".