2049009 has 4 divisors (see below), whose sum is σ = 2732016. Its totient is φ = 1366004.

The previous prime is 2048983. The next prime is 2049041. The reversal of 2049009 is 9009402.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2049009 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 2049009.

It is not an unprimeable number, because it can be changed into a prime (2049409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341499 + ... + 341504.

It is an arithmetic number, because the mean of its divisors is an integer number (683004).

2^2049009 is an apocalyptic number.

It is an amenable number.

2049009 is a deficient number, since it is larger than the sum of its proper divisors (683007).

2049009 is an equidigital number, since it uses as much as digits as its factorization.

2049009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683006.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 2049009 is about 1431.4359922819. The cubic root of 2049009 is about 127.0129360415.

The spelling of 2049009 in words is "two million, forty-nine thousand, nine".