394606434831 has 16 divisors (see below), whose sum is σ = 615971021568. Its totient is φ = 219989649600.

The previous prime is 394606434809. The next prime is 394606434839. The reversal of 394606434831 is 138434606493.

It is a happy number.

It is not a de Polignac number, because 394606434831 - 2¹⁴ = 394606418447 is a prime.

It is a super-2 number, since 2×394606434831² (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 (394606434839) 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, 229155025 + ... + 229156746.

It is an arithmetic number, because the mean of its divisors is an integer number (38498188848).

Almost surely, 2^394606434831 is an apocalyptic number.

394606434831 is a deficient number, since it is larger than the sum of its proper divisors (221364586737).

394606434831 is a wasteful number, since it uses less digits than its factorization.

394606434831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458311822.

The product of its (nonzero) digits is 4478976, while the sum is 51.

The spelling of 394606434831 in words is "three hundred ninety-four billion, six hundred six million, four hundred thirty-four thousand, eight hundred thirty-one".