1089585 has 32 divisors (see below), whose sum is σ = 2215680. Its totient is φ = 497664.

The previous prime is 1089563. The next prime is 1089611. The reversal of 1089585 is 5859801.

It is not a de Polignac number, because 1089585 - 2⁷ = 1089457 is a prime.

It is a plaindrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 369 + ... + 1521.

It is an arithmetic number, because the mean of its divisors is an integer number (69240).

2^1089585 is an apocalyptic number.

1089585 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1089585 is an abundant number, since it is smaller than the sum of its proper divisors (1126095).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1089585 is a wasteful number, since it uses less digits than its factorization.

1089585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174 (or 1168 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The square root of 1089585 is about 1043.8318830157. The cubic root of 1089585 is about 102.9011840168.

The spelling of 1089585 in words is "one million, eighty-nine thousand, five hundred eighty-five".