394694407143 has 12 divisors (see below), whose sum is σ = 583372612680. Its totient is φ = 257010311376.

The previous prime is 394694407141. The next prime is 394694407153. The reversal of 394694407143 is 341704496493.

394694407143 is a `hidden beast` number, since 3 + 9 + 4 + 6 + 94 + 407 + 143 = 666.

It is not a de Polignac number, because 394694407143 - 2¹ = 394694407141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 394694407143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394694407141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 509940708 + ... + 509941481.

It is an arithmetic number, because the mean of its divisors is an integer number (48614384390).

Almost surely, 2^394694407143 is an apocalyptic number.

394694407143 is a deficient number, since it is larger than the sum of its proper divisors (188678205537).

394694407143 is a wasteful number, since it uses less digits than its factorization.

394694407143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019882238 (or 1019882235 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 54.

The spelling of 394694407143 in words is "three hundred ninety-four billion, six hundred ninety-four million, four hundred seven thousand, one hundred forty-three".