2306409 has 8 divisors (see below), whose sum is σ = 3514560. Its totient is φ = 1317936.

The previous prime is 2306393. The next prime is 2306413. The reversal of 2306409 is 9046032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2306409 - 2⁴ = 2306393 is a prime.

It is a Curzon number.

2306409 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2306449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54894 + ... + 54935.

It is an arithmetic number, because the mean of its divisors is an integer number (439320).

2^2306409 is an apocalyptic number.

It is an amenable number.

2306409 is a deficient number, since it is larger than the sum of its proper divisors (1208151).

2306409 is a wasteful number, since it uses less digits than its factorization.

2306409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109839.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 2306409 is about 1518.6866036151. The cubic root of 2306409 is about 132.1231059979.

The spelling of 2306409 in words is "two million, three hundred six thousand, four hundred nine".