2905439 has 2 divisors, whose sum is σ = 2905440. Its totient is φ = 2905438.

The previous prime is 2905433. The next prime is 2905447. The reversal of 2905439 is 9345092.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2905439 - 2⁸ = 2905183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2905433) 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, 1452719 + 1452720.

It is an arithmetic number, because the mean of its divisors is an integer number (1452720).

2^2905439 is an apocalyptic number.

2905439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2905439 is an equidigital number, since it uses as much as digits as its factorization.

2905439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 2905439 is about 1704.5348339063. The cubic root of 2905439 is about 142.6934113203.

The spelling of 2905439 in words is "two million, nine hundred five thousand, four hundred thirty-nine".