2085009 has 4 divisors (see below), whose sum is σ = 2780016. Its totient is φ = 1390004.

The previous prime is 2085007. The next prime is 2085011. The reversal of 2085009 is 9005802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2085007) and next prime (2085011).

It is a cyclic number.

It is not a de Polignac number, because 2085009 - 2¹ = 2085007 is a prime.

It is a D-number.

2085009 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2085009.

It is not an unprimeable number, because it can be changed into a prime (2085007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347499 + ... + 347504.

It is an arithmetic number, because the mean of its divisors is an integer number (695004).

2^2085009 is an apocalyptic number.

It is an amenable number.

2085009 is a deficient number, since it is larger than the sum of its proper divisors (695007).

2085009 is an equidigital number, since it uses as much as digits as its factorization.

2085009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695006.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 2085009 is about 1443.9560242611. The cubic root of 2085009 is about 127.7524716671.

The spelling of 2085009 in words is "two million, eighty-five thousand, nine".