271989 has 12 divisors (see below), whose sum is σ = 401856. Its totient is φ = 177192.

The previous prime is 271981. The next prime is 272003. The reversal of 271989 is 989172.

It is a happy number.

It is not a de Polignac number, because 271989 - 2³ = 271981 is a prime.

It is a super-2 number, since 2×271989² = 147956032242, which contains 22 as substring.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (271981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102 + ... + 744.

It is an arithmetic number, because the mean of its divisors is an integer number (33488).

2²⁷¹⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

271989 is a deficient number, since it is larger than the sum of its proper divisors (129867).

271989 is a wasteful number, since it uses less digits than its factorization.

271989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696 (or 693 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 271989 is about 521.5256465410. The cubic root of 271989 is about 64.7913625890.

Subtracting from 271989 its sum of digits (36), we obtain a triangular number (271953 = T₇₃₇).

It can be divided in two parts, 27 and 1989, that added together give a triangular number (2016 = T₆₃).

The spelling of 271989 in words is "two hundred seventy-one thousand, nine hundred eighty-nine".