827027869 has 2 divisors, whose sum is σ = 827027870. Its totient is φ = 827027868.

The previous prime is 827027863. The next prime is 827027893. The reversal of 827027869 is 968720728.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 695007769 + 132020100 = 26363^2 + 11490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-827027869 is a prime.

It is a super-2 number, since 2×827027869² = 1367950192205362322, 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 (827027863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413513934 + 413513935.

It is an arithmetic number, because the mean of its divisors is an integer number (413513935).

Almost surely, 2^827027869 is an apocalyptic number.

It is an amenable number.

827027869 is a deficient number, since it is larger than the sum of its proper divisors (1).

827027869 is an equidigital number, since it uses as much as digits as its factorization.

827027869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 827027869 is about 28758.0922350562. The cubic root of 827027869 is about 938.6565496162.

The spelling of 827027869 in words is "eight hundred twenty-seven million, twenty-seven thousand, eight hundred sixty-nine".