1081289 has 4 divisors (see below), whose sum is σ = 1179600. Its totient is φ = 982980.

The previous prime is 1081279. The next prime is 1081291. The reversal of 1081289 is 9821801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1081289 - 2¹⁶ = 1015753 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1081219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49139 + ... + 49160.

It is an arithmetic number, because the mean of its divisors is an integer number (294900).

2^1081289 is an apocalyptic number.

It is an amenable number.

1081289 is a deficient number, since it is larger than the sum of its proper divisors (98311).

1081289 is an equidigital number, since it uses as much as digits as its factorization.

1081289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98310.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 1081289 is about 1039.8504700196. The cubic root of 1081289 is about 102.6393583316.

It can be divided in two parts, 10812 and 89, that added together give a palindrome (10901).

The spelling of 1081289 in words is "one million, eighty-one thousand, two hundred eighty-nine".