271640269 has 2 divisors, whose sum is σ = 271640270. Its totient is φ = 271640268.

The previous prime is 271640267. The next prime is 271640279. The reversal of 271640269 is 962046172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203775625 + 67864644 = 14275^2 + 8238^2 .

It is a cyclic number.

It is not a de Polignac number, because 271640269 - 2¹ = 271640267 is a prime.

It is a super-2 number, since 2×271640269² = 147576871484784722, which contains 22 as substring.

Together with 271640267, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (271640267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135820134 + 135820135.

It is an arithmetic number, because the mean of its divisors is an integer number (135820135).

Almost surely, 2^271640269 is an apocalyptic number.

It is an amenable number.

271640269 is a deficient number, since it is larger than the sum of its proper divisors (1).

271640269 is an equidigital number, since it uses as much as digits as its factorization.

271640269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 271640269 is about 16481.5129463287. The cubic root of 271640269 is about 647.6365997338.

The spelling of 271640269 in words is "two hundred seventy-one million, six hundred forty thousand, two hundred sixty-nine".