394695549504 has 63 divisors (see below), whose sum is σ = 1131366748057. Its totient is φ = 131560157184.

The previous prime is 394695549491. The next prime is 394695549509. The reversal of 394695549504 is 405945596493.

The square root of 394695549504 is 628248.

It is a perfect power (a square), and thus also a powerful number.

394695549504 is a `hidden beast` number, since 3 + 94 + 6 + 9 + 55 + 495 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 379406721600 + 15288827904 = 615960^2 + 123648^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394695549509) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15064864 + ... + 15091040.

Almost surely, 2^394695549504 is an apocalyptic number.

394695549504 is the 628248-th square number.

It is an amenable number.

394695549504 is an abundant number, since it is smaller than the sum of its proper divisors (736671198553).

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

394695549504 is an frugal number, since it uses more digits than its factorization.

394695549504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52372 (or 26182 counting only the distinct ones).

The product of its (nonzero) digits is 104976000, while the sum is 63.

The spelling of 394695549504 in words is "three hundred ninety-four billion, six hundred ninety-five million, five hundred forty-nine thousand, five hundred four".