394564984431 has 32 divisors (see below), whose sum is σ = 537775718400. Its totient is φ = 257248518240.

The previous prime is 394564984417. The next prime is 394564984447. The reversal of 394564984431 is 134489465493.

It is not a de Polignac number, because 394564984431 - 2¹⁴ = 394564968047 is a prime.

It is a super-2 number, since 2×394564984431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394564984531) 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 31 ways as a sum of consecutive naturals, for example, 27379830 + ... + 27394236.

It is an arithmetic number, because the mean of its divisors is an integer number (16805491200).

Almost surely, 2^394564984431 is an apocalyptic number.

394564984431 is a deficient number, since it is larger than the sum of its proper divisors (143210733969).

394564984431 is a wasteful number, since it uses less digits than its factorization.

394564984431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15259.

The product of its digits is 44789760, while the sum is 60.

The spelling of 394564984431 in words is "three hundred ninety-four billion, five hundred sixty-four million, nine hundred eighty-four thousand, four hundred thirty-one".