871256387 has 8 divisors (see below), whose sum is σ = 883844160. Its totient is φ = 858686400.

The previous prime is 871256383. The next prime is 871256389. The reversal of 871256387 is 783652178.

It is a happy number.

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 871256387 - 2² = 871256383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (871256383) 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, 118262 + ... + 125412.

It is an arithmetic number, because the mean of its divisors is an integer number (110480520).

Almost surely, 2^871256387 is an apocalyptic number.

871256387 is a deficient number, since it is larger than the sum of its proper divisors (12587773).

871256387 is a wasteful number, since it uses less digits than its factorization.

871256387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8893.

The product of its digits is 564480, while the sum is 47.

The square root of 871256387 is about 29517.0524781862. The cubic root of 871256387 is about 955.0995892232.

The spelling of 871256387 in words is "eight hundred seventy-one million, two hundred fifty-six thousand, three hundred eighty-seven".