871099969 has 4 divisors (see below), whose sum is σ = 899200000. Its totient is φ = 842999940.

The previous prime is 871099963. The next prime is 871099979. The reversal of 871099969 is 969990178.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 871099969 - 2¹⁹ = 870575681 is a prime.

It is a super-2 number, since 2×871099969² = 1517630311983601922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (871099963) 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, 14049969 + ... + 14050030.

It is an arithmetic number, because the mean of its divisors is an integer number (224800000).

Almost surely, 2^871099969 is an apocalyptic number.

It is an amenable number.

871099969 is a deficient number, since it is larger than the sum of its proper divisors (28100031).

871099969 is a wasteful number, since it uses less digits than its factorization.

871099969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28100030.

The product of its (nonzero) digits is 2204496, while the sum is 58.

The square root of 871099969 is about 29514.4027383242. The cubic root of 871099969 is about 955.0424289693.

The spelling of 871099969 in words is "eight hundred seventy-one million, ninety-nine thousand, nine hundred sixty-nine".