871015049 has 4 divisors (see below), whose sum is σ = 882946836. Its totient is φ = 859083264.

The previous prime is 871015001. The next prime is 871015051. The reversal of 871015049 is 940510178.

871015049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 607277449 + 263737600 = 24643^2 + 16240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-871015049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (871015099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5965784 + ... + 5965929.

It is an arithmetic number, because the mean of its divisors is an integer number (220736709).

Almost surely, 2^871015049 is an apocalyptic number.

It is an amenable number.

871015049 is a deficient number, since it is larger than the sum of its proper divisors (11931787).

871015049 is a wasteful number, since it uses less digits than its factorization.

871015049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11931786.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 871015049 is about 29512.9640836023. The cubic root of 871015049 is about 955.0113935576.

The spelling of 871015049 in words is "eight hundred seventy-one million, fifteen thousand, forty-nine".