871321469 has 2 divisors, whose sum is σ = 871321470. Its totient is φ = 871321468.

The previous prime is 871321459. The next prime is 871321483. The reversal of 871321469 is 964123178.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 623101444 + 248220025 = 24962^2 + 15755^2 .

It is a cyclic number.

It is not a de Polignac number, because 871321469 - 2⁴ = 871321453 is a prime.

It is a super-2 number, since 2×871321469² = 1518402204680635922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (871321439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435660734 + 435660735.

It is an arithmetic number, because the mean of its divisors is an integer number (435660735).

Almost surely, 2^871321469 is an apocalyptic number.

It is an amenable number.

871321469 is a deficient number, since it is larger than the sum of its proper divisors (1).

871321469 is an equidigital number, since it uses as much as digits as its factorization.

871321469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 871321469 is about 29518.1549050749. The cubic root of 871321469 is about 955.1233702995.

The spelling of 871321469 in words is "eight hundred seventy-one million, three hundred twenty-one thousand, four hundred sixty-nine".