394538040001 has 16 divisors (see below), whose sum is σ = 460520847360. Its totient is φ = 330961122000.

The previous prime is 394538039941. The next prime is 394538040049. The reversal of 394538040001 is 100040835493.

It is not a de Polignac number, because 394538040001 - 2⁷ = 394538039873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (394538040601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11174626 + ... + 11209876.

It is an arithmetic number, because the mean of its divisors is an integer number (28782552960).

Almost surely, 2^394538040001 is an apocalyptic number.

It is an amenable number.

394538040001 is a deficient number, since it is larger than the sum of its proper divisors (65982807359).

394538040001 is a wasteful number, since it uses less digits than its factorization.

394538040001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69324.

The product of its (nonzero) digits is 51840, while the sum is 37.

Adding to 394538040001 its reverse (100040835493), we get a palindrome (494578875494).

The spelling of 394538040001 in words is "three hundred ninety-four billion, five hundred thirty-eight million, forty thousand, one".