2087009 has 4 divisors (see below), whose sum is σ = 2091204. Its totient is φ = 2082816.

The previous prime is 2086969. The next prime is 2087011. The reversal of 2087009 is 9007802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9007802 = 2 ⋅4503901.

It can be written as a sum of positive squares in 2 ways, for example, as 1030225 + 1056784 = 1015^2 + 1028^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2087009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2087069) 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, 1232 + ... + 2385.

It is an arithmetic number, because the mean of its divisors is an integer number (522801).

2^2087009 is an apocalyptic number.

It is an amenable number.

2087009 is a deficient number, since it is larger than the sum of its proper divisors (4195).

2087009 is an equidigital number, since it uses as much as digits as its factorization.

2087009 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 1008, while the sum is 26.

The square root of 2087009 is about 1444.6484001306. The cubic root of 2087009 is about 127.7933065493.

The spelling of 2087009 in words is "two million, eighty-seven thousand, nine".