1089271 has 4 divisors (see below), whose sum is σ = 1101600. Its totient is φ = 1076944.

The previous prime is 1089259. The next prime is 1089299. The reversal of 1089271 is 1729801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1089271 - 2⁵ = 1089239 is a prime.

It is a super-2 number, since 2×1089271² = 2373022622882, which contains 22 as substring.

It is a Duffinian number.

1089271 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1080271) 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 in 3 ways as a sum of consecutive naturals, for example, 6031 + ... + 6208.

It is an arithmetic number, because the mean of its divisors is an integer number (275400).

2^1089271 is an apocalyptic number.

1089271 is a deficient number, since it is larger than the sum of its proper divisors (12329).

1089271 is an equidigital number, since it uses as much as digits as its factorization.

1089271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12328.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1089271 is about 1043.6814648158. The cubic root of 1089271 is about 102.8912982725.

The spelling of 1089271 in words is "one million, eighty-nine thousand, two hundred seventy-one".