1088809 has 4 divisors (see below), whose sum is σ = 1093716. Its totient is φ = 1083904.

The previous prime is 1088807. The next prime is 1088827. The reversal of 1088809 is 9088801.

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

It can be written as a sum of positive squares in 2 ways, for example, as 685584 + 403225 = 828^2 + 635^2 .

It is a cyclic number.

It is not a de Polignac number, because 1088809 - 2¹ = 1088807 is a prime.

It is an Ulam number.

It is a Duffinian number.

1088809 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1088807) 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, 2104 + ... + 2569.

It is an arithmetic number, because the mean of its divisors is an integer number (273429).

2^1088809 is an apocalyptic number.

It is an amenable number.

1088809 is a deficient number, since it is larger than the sum of its proper divisors (4907).

1088809 is an equidigital number, since it uses as much as digits as its factorization.

1088809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4906.

The product of its (nonzero) digits is 4608, while the sum is 34.

The square root of 1088809 is about 1043.4601094436. The cubic root of 1088809 is about 102.8767495508.

The spelling of 1088809 in words is "one million, eighty-eight thousand, eight hundred nine".