871919099 has 4 divisors (see below), whose sum is σ = 873452040. Its totient is φ = 870386160.

The previous prime is 871919071. The next prime is 871919107. The reversal of 871919099 is 990919178.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 990919178 = 2 ⋅495459589.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-871919099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 871919099.

It is not an unprimeable number, because it can be changed into a prime (871919599) 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, 765617 + ... + 766754.

It is an arithmetic number, because the mean of its divisors is an integer number (218363010).

Almost surely, 2^871919099 is an apocalyptic number.

871919099 is a deficient number, since it is larger than the sum of its proper divisors (1532941).

871919099 is a wasteful number, since it uses less digits than its factorization.

871919099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532940.

The product of its (nonzero) digits is 367416, while the sum is 53.

The square root of 871919099 is about 29528.2762619155. The cubic root of 871919099 is about 955.3416899995.

The spelling of 871919099 in words is "eight hundred seventy-one million, nine hundred nineteen thousand, ninety-nine".