394466042880 has 704 divisors, whose sum is σ = 1725422522880. Its totient is φ = 83225346048.

The previous prime is 394466042843. The next prime is 394466042897. The reversal of 394466042880 is 88240664493.

394466042880 is a `hidden beast` number, since 3 + 9 + 4 + 4 + 6 + 604 + 28 + 8 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12564162 + ... + 12595518.

Almost surely, 2^394466042880 is an apocalyptic number.

394466042880 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 394466042880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (862711261440).

394466042880 is an abundant number, since it is smaller than the sum of its proper divisors (1330956480000).

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

394466042880 is a wasteful number, since it uses less digits than its factorization.

394466042880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31411 (or 31387 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 54.

The spelling of 394466042880 in words is "three hundred ninety-four billion, four hundred sixty-six million, forty-two thousand, eight hundred eighty".