399364350071 has 18 divisors (see below), whose sum is σ = 416436127128. Its totient is φ = 382908894480.

The previous prime is 399364350043. The next prime is 399364350089. The reversal of 399364350071 is 170053463993.

It is not a de Polignac number, because 399364350071 - 2²⁶ = 399297241207 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399361350071) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 197021360 + ... + 197023386.

It is an arithmetic number, because the mean of its divisors is an integer number (23135340396).

Almost surely, 2^399364350071 is an apocalyptic number.

399364350071 is a deficient number, since it is larger than the sum of its proper divisors (17071777057).

399364350071 is an frugal number, since it uses more digits than its factorization.

399364350071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4199 (or 2135 counting only the distinct ones).

The product of its (nonzero) digits is 1837080, while the sum is 50.

The spelling of 399364350071 in words is "three hundred ninety-nine billion, three hundred sixty-four million, three hundred fifty thousand, seventy-one".