2064409 has 4 divisors (see below), whose sum is σ = 2076516. Its totient is φ = 2052304.

The previous prime is 2064389. The next prime is 2064421. The reversal of 2064409 is 9044602.

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 1814409 + 250000 = 1347^2 + 500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2064409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2064449) 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, 5794 + ... + 6139.

It is an arithmetic number, because the mean of its divisors is an integer number (519129).

2^2064409 is an apocalyptic number.

It is an amenable number.

2064409 is a deficient number, since it is larger than the sum of its proper divisors (12107).

2064409 is a wasteful number, since it uses less digits than its factorization.

2064409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12106.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 2064409 is about 1436.8051364051. The cubic root of 2064409 is about 127.3303446451.

The spelling of 2064409 in words is "two million, sixty-four thousand, four hundred nine".