1085009 has 4 divisors (see below), whose sum is σ = 1089204. Its totient is φ = 1080816.

The previous prime is 1085003. The next prime is 1085011. The reversal of 1085009 is 9005801.

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 529984 + 555025 = 728^2 + 745^2 .

It is a cyclic number.

It is not a de Polignac number, because 1085009 - 2¹² = 1080913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1085003) 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, 1682 + ... + 2235.

It is an arithmetic number, because the mean of its divisors is an integer number (272301).

2^1085009 is an apocalyptic number.

It is an amenable number.

1085009 is a deficient number, since it is larger than the sum of its proper divisors (4195).

1085009 is an equidigital number, since it uses as much as digits as its factorization.

1085009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4194.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 1085009 is about 1041.6376529293. The cubic root of 1085009 is about 102.7569283141.

The spelling of 1085009 in words is "one million, eighty-five thousand, nine".