394396066240 has 56 divisors (see below), whose sum is σ = 1024533426672. Its totient is φ = 143416750080.

The previous prime is 394396066201. The next prime is 394396066249. The reversal of 394396066240 is 42660693493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394396066249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56018649 + ... + 56025688.

It is an arithmetic number, because the mean of its divisors is an integer number (18295239762).

Almost surely, 2^394396066240 is an apocalyptic number.

It is an amenable number.

394396066240 is an abundant number, since it is smaller than the sum of its proper divisors (630137360432).

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

394396066240 is a wasteful number, since it uses less digits than its factorization.

394396066240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112044365 (or 112044355 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 52.

The spelling of 394396066240 in words is "three hundred ninety-four billion, three hundred ninety-six million, sixty-six thousand, two hundred forty".