871244287 has 2 divisors, whose sum is σ = 871244288. Its totient is φ = 871244286.

The previous prime is 871244233. The next prime is 871244293. The reversal of 871244287 is 782442178.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-871244287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (871247287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435622143 + 435622144.

It is an arithmetic number, because the mean of its divisors is an integer number (435622144).

Almost surely, 2^871244287 is an apocalyptic number.

871244287 is a deficient number, since it is larger than the sum of its proper divisors (1).

871244287 is an equidigital number, since it uses as much as digits as its factorization.

871244287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 200704, while the sum is 43.

The square root of 871244287 is about 29516.8475112096. The cubic root of 871244287 is about 955.0951677316.

The spelling of 871244287 in words is "eight hundred seventy-one million, two hundred forty-four thousand, two hundred eighty-seven".