394693225920 has 1344 divisors, whose sum is σ = 1730928476160. Its totient is φ = 80472268800.

The previous prime is 394693225889. The next prime is 394693225961. The reversal of 394693225920 is 29522396493.

394693225920 is a `hidden beast` number, since 3 + 9 + 46 + 9 + 3 + 2 + 2 + 592 + 0 = 666.

394693225920 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 (1344).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 625504005 + ... + 625504635.

Almost surely, 2^394693225920 is an apocalyptic number.

394693225920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394693225920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (865464238080).

394693225920 is an abundant number, since it is smaller than the sum of its proper divisors (1336235250240).

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

394693225920 is a wasteful number, since it uses less digits than its factorization.

394693225920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774 (or 761 counting only the distinct ones).

The product of its (nonzero) digits is 6298560, while the sum is 54.

The spelling of 394693225920 in words is "three hundred ninety-four billion, six hundred ninety-three million, two hundred twenty-five thousand, nine hundred twenty".