394135343547408 has 60 divisors (see below), whose sum is σ = 1103068724075760. Its totient is φ = 131374020374208.

The previous prime is 394135343547401. The next prime is 394135343547457. The reversal of 394135343547408 is 804745343531493.

394135343547408 is a `hidden beast` number, since 3 + 9 + 4 + 1 + 3 + 5 + 3 + 43 + 547 + 40 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (394135343547401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41830338 + ... + 50379041.

It is an arithmetic number, because the mean of its divisors is an integer number (18384478734596).

Almost surely, 2^{394135343547408} is an apocalyptic number.

It is an amenable number.

394135343547408 is an abundant number, since it is smaller than the sum of its proper divisors (708933380528352).

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

394135343547408 is a wasteful number, since it uses less digits than its factorization.

394135343547408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92239076 (or 92239067 counting only the distinct ones).

The product of its (nonzero) digits is 261273600, while the sum is 63.

The spelling of 394135343547408 in words is "three hundred ninety-four trillion, one hundred thirty-five billion, three hundred forty-three million, five hundred forty-seven thousand, four hundred eight".