394773450624 has 640 divisors, whose sum is σ = 1371057969600. Its totient is φ = 110433632256.

The previous prime is 394773450619. The next prime is 394773450641. The reversal of 394773450624 is 426054377493.

It is a happy number.

394773450624 is a `hidden beast` number, since 3 + 9 + 4 + 7 + 7 + 3 + 4 + 5 + 0 + 624 = 666.

394773450624 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1425174774 + ... + 1425175050.

Almost surely, 2^394773450624 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 394773450624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685528984800).

394773450624 is an abundant number, since it is smaller than the sum of its proper divisors (976284518976).

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

394773450624 is a wasteful number, since it uses less digits than its factorization.

394773450624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 54.

The spelling of 394773450624 in words is "three hundred ninety-four billion, seven hundred seventy-three million, four hundred fifty thousand, six hundred twenty-four".