871223069 has 2 divisors, whose sum is σ = 871223070. Its totient is φ = 871223068.

The previous prime is 871223011. The next prime is 871223081. The reversal of 871223069 is 960322178.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 504002500 + 367220569 = 22450^2 + 19163^2 .

It is a cyclic number.

It is not a de Polignac number, because 871223069 - 2⁸ = 871222813 is a prime.

It is a super-2 number, since 2×871223069² = 1518059271915557522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (871223369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435611534 + 435611535.

It is an arithmetic number, because the mean of its divisors is an integer number (435611535).

Almost surely, 2^871223069 is an apocalyptic number.

It is an amenable number.

871223069 is a deficient number, since it is larger than the sum of its proper divisors (1).

871223069 is an equidigital number, since it uses as much as digits as its factorization.

871223069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 871223069 is about 29516.4880871692. The cubic root of 871223069 is about 955.0874143096.

The spelling of 871223069 in words is "eight hundred seventy-one million, two hundred twenty-three thousand, sixty-nine".