271689289 has 9 divisors (see below), whose sum is σ = 277805479. Its totient is φ = 265705960.

The previous prime is 271689259. The next prime is 271689311. The reversal of 271689289 is 982986172.

The square root of 271689289 is 16483.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 195860025 + 75829264 = 13995^2 + 8708^2 .

It is not a de Polignac number, because 271689289 - 2⁷ = 271689161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (271689259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 873444 + ... + 873754.

Almost surely, 2^271689289 is an apocalyptic number.

271689289 is the 16483-rd square number.

271689289 is the 8242-nd centered octagonal number.

It is an amenable number.

271689289 is a deficient number, since it is larger than the sum of its proper divisors (6116190).

271689289 is an frugal number, since it uses more digits than its factorization.

271689289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728 (or 364 counting only the distinct ones).

The product of its digits is 870912, while the sum is 52.

The cubic root of 271689289 is about 647.6755547296.

The spelling of 271689289 in words is "two hundred seventy-one million, six hundred eighty-nine thousand, two hundred eighty-nine".