871979250 has 128 divisors (see below), whose sum is σ = 2302110720. Its totient is φ = 219475200.

The previous prime is 871979237. The next prime is 871979263. The reversal of 871979250 is 52979178.

It is an interprime number because it is at equal distance from previous prime (871979237) and next prime (871979263).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 871979250.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1021824 + ... + 1022676.

It is an arithmetic number, because the mean of its divisors is an integer number (17985240).

Almost surely, 2^871979250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 871979250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1151055360).

871979250 is an abundant number, since it is smaller than the sum of its proper divisors (1430131470).

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

871979250 is a wasteful number, since it uses less digits than its factorization.

871979250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949 (or 939 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 48.

The square root of 871979250 is about 29529.2947765435. The cubic root of 871979250 is about 955.3636581832.

The spelling of 871979250 in words is "eight hundred seventy-one million, nine hundred seventy-nine thousand, two hundred fifty".