827421277 has 2 divisors, whose sum is σ = 827421278. Its totient is φ = 827421276.

The previous prime is 827421223. The next prime is 827421299. The reversal of 827421277 is 772124728.

827421277 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 782544676 + 44876601 = 27974^2 + 6699^2 .

It is a cyclic number.

It is not a de Polignac number, because 827421277 - 2²⁷ = 693203549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (827421377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413710638 + 413710639.

It is an arithmetic number, because the mean of its divisors is an integer number (413710639).

Almost surely, 2^827421277 is an apocalyptic number.

It is an amenable number.

827421277 is a deficient number, since it is larger than the sum of its proper divisors (1).

827421277 is an equidigital number, since it uses as much as digits as its factorization.

827421277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87808, while the sum is 40.

The square root of 827421277 is about 28764.9313748530. The cubic root of 827421277 is about 938.8053621983.

The spelling of 827421277 in words is "eight hundred twenty-seven million, four hundred twenty-one thousand, two hundred seventy-seven".