871955392 has 224 divisors, whose sum is σ = 2311603200. Its totient is φ = 322882560.

The previous prime is 871955377. The next prime is 871955393. The reversal of 871955392 is 293559178.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (49).

Its product of digits (680400) is a multiple of the sum of its prime divisors (200).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871955393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5553778 + ... + 5553934.

Almost surely, 2^871955392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 871955392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1155801600).

871955392 is an abundant number, since it is smaller than the sum of its proper divisors (1439647808).

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

871955392 is a wasteful number, since it uses less digits than its factorization.

871955392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 200 counting only the distinct ones).

The product of its digits is 680400, while the sum is 49.

The square root of 871955392 is about 29528.8908020603. The cubic root of 871955392 is about 955.3549449506.

The spelling of 871955392 in words is "eight hundred seventy-one million, nine hundred fifty-five thousand, three hundred ninety-two".