2339809 has 2 divisors, whose sum is σ = 2339810. Its totient is φ = 2339808.

The previous prime is 2339803. The next prime is 2339833. The reversal of 2339809 is 9089332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2117025 + 222784 = 1455^2 + 472^2 .

It is a cyclic number.

It is not a de Polignac number, because 2339809 - 2⁷ = 2339681 is a prime.

2339809 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2339803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1169904 + 1169905.

It is an arithmetic number, because the mean of its divisors is an integer number (1169905).

2^2339809 is an apocalyptic number.

It is an amenable number.

2339809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2339809 is an equidigital number, since it uses as much as digits as its factorization.

2339809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 2339809 is about 1529.6434225008. The cubic root of 2339809 is about 132.7578271577.

The spelling of 2339809 in words is "two million, three hundred thirty-nine thousand, eight hundred nine".