399534749171 has 8 divisors (see below), whose sum is σ = 400095128688. Its totient is φ = 398974464000.

The previous prime is 399534749161. The next prime is 399534749197. The reversal of 399534749171 is 171947435993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 399534749171 - 2³⁴ = 382354879987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399534749161) 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 7 ways as a sum of consecutive naturals, for example, 14849651 + ... + 14876531.

It is an arithmetic number, because the mean of its divisors is an integer number (50011891086).

Almost surely, 2^399534749171 is an apocalyptic number.

399534749171 is a deficient number, since it is larger than the sum of its proper divisors (560379517).

399534749171 is a wasteful number, since it uses less digits than its factorization.

399534749171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47173.

The product of its digits is 25719120, while the sum is 62.

The spelling of 399534749171 in words is "three hundred ninety-nine billion, five hundred thirty-four million, seven hundred forty-nine thousand, one hundred seventy-one".