1089559 has 4 divisors (see below), whose sum is σ = 1127160. Its totient is φ = 1051960.

The previous prime is 1089551. The next prime is 1089563. The reversal of 1089559 is 9559801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9559801 = 37 ⋅258373.

It is a cyclic number.

It is not a de Polignac number, because 1089559 - 2³ = 1089551 is a prime.

It is a super-3 number, since 3×1089559³ = 3880373338701311637, which contains 333 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18757 + ... + 18814.

It is an arithmetic number, because the mean of its divisors is an integer number (281790).

2^1089559 is an apocalyptic number.

1089559 is a deficient number, since it is larger than the sum of its proper divisors (37601).

1089559 is an equidigital number, since it uses as much as digits as its factorization.

1089559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37600.

The product of its (nonzero) digits is 16200, while the sum is 37.

The square root of 1089559 is about 1043.8194288286. The cubic root of 1089559 is about 102.9003655242.

The spelling of 1089559 in words is "one million, eighty-nine thousand, five hundred fifty-nine".