871423391 has 8 divisors (see below), whose sum is σ = 928341120. Its totient is φ = 815611032.

The previous prime is 871423351. The next prime is 871423409. The reversal of 871423391 is 193324178.

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 871423391 - 2¹⁴ = 871407007 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 (871423331) 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, 274715 + ... + 277868.

It is an arithmetic number, because the mean of its divisors is an integer number (116042640).

Almost surely, 2^871423391 is an apocalyptic number.

871423391 is a deficient number, since it is larger than the sum of its proper divisors (56917729).

871423391 is a wasteful number, since it uses less digits than its factorization.

871423391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552685.

The product of its digits is 36288, while the sum is 38.

The square root of 871423391 is about 29519.8812836366. The cubic root of 871423391 is about 955.1606103967.

The spelling of 871423391 in words is "eight hundred seventy-one million, four hundred twenty-three thousand, three hundred ninety-one".