871345139 has 8 divisors (see below), whose sum is σ = 996209760. Its totient is φ = 746577216.

The previous prime is 871345129. The next prime is 871345169. The reversal of 871345139 is 931543178.

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

It is not a de Polignac number, because 871345139 - 2²⁸ = 602909683 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 871345096 and 871345105.

It is not an unprimeable number, because it can be changed into a prime (871345109) 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, 3704 + ... + 41909.

It is an arithmetic number, because the mean of its divisors is an integer number (124526220).

Almost surely, 2^871345139 is an apocalyptic number.

871345139 is a deficient number, since it is larger than the sum of its proper divisors (124864621).

871345139 is a wasteful number, since it uses less digits than its factorization.

871345139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48349.

The product of its digits is 90720, while the sum is 41.

The square root of 871345139 is about 29518.5558420462. Note that the first 3 decimals coincide. The cubic root of 871345139 is about 955.1320190651.

The spelling of 871345139 in words is "eight hundred seventy-one million, three hundred forty-five thousand, one hundred thirty-nine".