399348143271 has 96 divisors (see below), whose sum is σ = 746145673728. Its totient is φ = 207359792640.

The previous prime is 399348143261. The next prime is 399348143291. The reversal of 399348143271 is 172341843993.

399348143271 is a `hidden beast` number, since 3 + 9 + 93 + 481 + 4 + 3 + 2 + 71 = 666.

It is not a de Polignac number, because 399348143271 - 2¹¹ = 399348141223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399348143261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 64231755 + ... + 64237971.

It is an arithmetic number, because the mean of its divisors is an integer number (7772350768).

Almost surely, 2^399348143271 is an apocalyptic number.

399348143271 is a deficient number, since it is larger than the sum of its proper divisors (346797530457).

399348143271 is a wasteful number, since it uses less digits than its factorization.

399348143271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9683 (or 9671 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The spelling of 399348143271 in words is "three hundred ninety-nine billion, three hundred forty-eight million, one hundred forty-three thousand, two hundred seventy-one".