394436747124 has 384 divisors, whose sum is σ = 1287934771200. Its totient is φ = 101786129280.

The previous prime is 394436747113. The next prime is 394436747129. The reversal of 394436747124 is 421747634493.

It is a happy number.

394436747124 is a `hidden beast` number, since 3 + 9 + 443 + 6 + 74 + 7 + 124 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394436747129) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 109351329 + ... + 109354935.

It is an arithmetic number, because the mean of its divisors is an integer number (3353996800).

Almost surely, 2^394436747124 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 394436747124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (643967385600).

394436747124 is an abundant number, since it is smaller than the sum of its proper divisors (893498024076).

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

394436747124 is a wasteful number, since it uses less digits than its factorization.

394436747124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4000 (or 3992 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 54.

The spelling of 394436747124 in words is "three hundred ninety-four billion, four hundred thirty-six million, seven hundred forty-seven thousand, one hundred twenty-four".