2405239 has 2 divisors, whose sum is σ = 2405240. Its totient is φ = 2405238.

The previous prime is 2405213. The next prime is 2405243. The reversal of 2405239 is 9325042.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2405239 - 2¹⁹ = 1880951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2405209) 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 as a sum of consecutive naturals, namely, 1202619 + 1202620.

It is an arithmetic number, because the mean of its divisors is an integer number (1202620).

2^2405239 is an apocalyptic number.

2405239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2405239 is an equidigital number, since it uses as much as digits as its factorization.

2405239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 2405239 is about 1550.8832967055. The cubic root of 2405239 is about 133.9839403045.

The spelling of 2405239 in words is "two million, four hundred five thousand, two hundred thirty-nine".