1089587 has 4 divisors (see below), whose sum is σ = 1091880. Its totient is φ = 1087296.

The previous prime is 1089563. The next prime is 1089611. The reversal of 1089587 is 7859801.

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

It is an interprime number because it is at equal distance from previous prime (1089563) and next prime (1089611).

It is a cyclic number.

It is not a de Polignac number, because 1089587 - 2⁶ = 1089523 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 1089587.

It is not an unprimeable number, because it can be changed into a prime (1085587) 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, 137 + ... + 1482.

It is an arithmetic number, because the mean of its divisors is an integer number (272970).

2^1089587 is an apocalyptic number.

1089587 is a deficient number, since it is larger than the sum of its proper divisors (2293).

1089587 is an equidigital number, since it uses as much as digits as its factorization.

1089587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 1089587 is about 1043.8328410239. The cubic root of 1089587 is about 102.9012469773.

The spelling of 1089587 in words is "one million, eighty-nine thousand, five hundred eighty-seven".