384139171 has 4 divisors (see below), whose sum is σ = 413688352. Its totient is φ = 354589992.

The previous prime is 384139163. The next prime is 384139183. The reversal of 384139171 is 171931483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 171931483 = 977 ⋅175979.

It is a cyclic number.

It is not a de Polignac number, because 384139171 - 2³ = 384139163 is a prime.

It is a super-3 number, since 3×384139171³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 384139171.

It is not an unprimeable number, because it can be changed into a prime (384139271) 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 3 ways as a sum of consecutive naturals, for example, 14774571 + ... + 14774596.

It is an arithmetic number, because the mean of its divisors is an integer number (103422088).

Almost surely, 2^384139171 is an apocalyptic number.

384139171 is a deficient number, since it is larger than the sum of its proper divisors (29549181).

384139171 is a wasteful number, since it uses less digits than its factorization.

384139171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29549180.

The product of its digits is 18144, while the sum is 37.

The square root of 384139171 is about 19599.4686407566. The cubic root of 384139171 is about 726.9360357248.

The spelling of 384139171 in words is "three hundred eighty-four million, one hundred thirty-nine thousand, one hundred seventy-one".