871943394 has 32 divisors (see below), whose sum is σ = 2025691776. Its totient is φ = 245041920.

The previous prime is 871943357. The next prime is 871943399. The reversal of 871943394 is 493349178.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (871943399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167607 + ... + 172730.

It is an arithmetic number, because the mean of its divisors is an integer number (63302868).

Almost surely, 2^871943394 is an apocalyptic number.

871943394 is an abundant number, since it is smaller than the sum of its proper divisors (1153748382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

871943394 is a wasteful number, since it uses less digits than its factorization.

871943394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340410.

The product of its digits is 653184, while the sum is 48.

The square root of 871943394 is about 29528.6876443908. The cubic root of 871943394 is about 955.3505630746.

The spelling of 871943394 in words is "eight hundred seventy-one million, nine hundred forty-three thousand, three hundred ninety-four".