871644434 has 32 divisors (see below), whose sum is σ = 1401753600. Its totient is φ = 405070848.

The previous prime is 871644407. The next prime is 871644457. The reversal of 871644434 is 434446178.

It is a junction number, because it is equal to n+sod(n) for n = 871644391 and 871644400.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1454867 + ... + 1455465.

It is an arithmetic number, because the mean of its divisors is an integer number (43804800).

Almost surely, 2^871644434 is an apocalyptic number.

871644434 is a deficient number, since it is larger than the sum of its proper divisors (530109166).

871644434 is a wasteful number, since it uses less digits than its factorization.

871644434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082.

The product of its digits is 258048, while the sum is 41.

The square root of 871644434 is about 29523.6250145540. The cubic root of 871644434 is about 955.2413647578.

The spelling of 871644434 in words is "eight hundred seventy-one million, six hundred forty-four thousand, four hundred thirty-four".