394564992441 has 16 divisors (see below), whose sum is σ = 538946993088. Its totient is φ = 256613849600.

The previous prime is 394564992403. The next prime is 394564992443. The reversal of 394564992441 is 144299465493.

It is a cyclic number.

It is not a de Polignac number, because 394564992441 - 2³⁰ = 393491250617 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (394564992443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2535361 + ... + 2686481.

It is an arithmetic number, because the mean of its divisors is an integer number (33684187068).

Almost surely, 2^394564992441 is an apocalyptic number.

It is an amenable number.

394564992441 is a deficient number, since it is larger than the sum of its proper divisors (144382000647).

394564992441 is a wasteful number, since it uses less digits than its factorization.

394564992441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172392.

The product of its digits is 33592320, while the sum is 60.

The spelling of 394564992441 in words is "three hundred ninety-four billion, five hundred sixty-four million, nine hundred ninety-two thousand, four hundred forty-one".