427027169 has 2 divisors, whose sum is σ = 427027170. Its totient is φ = 427027168.

The previous prime is 427027123. The next prime is 427027171. The reversal of 427027169 is 961720724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 426959569 + 67600 = 20663^2 + 260^2 .

It is a cyclic number.

It is not a de Polignac number, because 427027169 - 2¹² = 427023073 is a prime.

It is a super-2 number, since 2×427027169² = 364704406128309122, which contains 22 as substring.

Together with 427027171, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (427027189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213513584 + 213513585.

It is an arithmetic number, because the mean of its divisors is an integer number (213513585).

Almost surely, 2^427027169 is an apocalyptic number.

It is an amenable number.

427027169 is a deficient number, since it is larger than the sum of its proper divisors (1).

427027169 is an equidigital number, since it uses as much as digits as its factorization.

427027169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 427027169 is about 20664.6357093465. The cubic root of 427027169 is about 753.0407919692.

The spelling of 427027169 in words is "four hundred twenty-seven million, twenty-seven thousand, one hundred sixty-nine".