2046809 has 4 divisors (see below), whose sum is σ = 2060004. Its totient is φ = 2033616.

The previous prime is 2046799. The next prime is 2046823. The reversal of 2046809 is 9086402.

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 990025 + 1056784 = 995^2 + 1028^2 .

It is a cyclic number.

It is not a de Polignac number, because 2046809 - 2⁸ = 2046553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2046829) 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, 6362 + ... + 6675.

It is an arithmetic number, because the mean of its divisors is an integer number (515001).

2^2046809 is an apocalyptic number.

It is an amenable number.

2046809 is a deficient number, since it is larger than the sum of its proper divisors (13195).

2046809 is a wasteful number, since it uses less digits than its factorization.

2046809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13194.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 2046809 is about 1430.6673268094. The cubic root of 2046809 is about 126.9674622661.

The spelling of 2046809 in words is "two million, forty-six thousand, eight hundred nine".