9139871 has 8 divisors (see below), whose sum is σ = 9895200. Its totient is φ = 8392032.

The previous prime is 9139861. The next prime is 9139873. The reversal of 9139871 is 1789319.

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 9139871 - 2⁶ = 9139807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9139873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 821 + ... + 4353.

It is an arithmetic number, because the mean of its divisors is an integer number (1236900).

Almost surely, 2^9139871 is an apocalyptic number.

9139871 is a deficient number, since it is larger than the sum of its proper divisors (755329).

9139871 is a wasteful number, since it uses less digits than its factorization.

9139871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3745.

The product of its digits is 13608, while the sum is 38.

The square root of 9139871 is about 3023.2219567872. The cubic root of 9139871 is about 209.0804159310.

The spelling of 9139871 in words is "nine million, one hundred thirty-nine thousand, eight hundred seventy-one".