205041439 has 2 divisors, whose sum is σ = 205041440. Its totient is φ = 205041438.

The previous prime is 205041391. The next prime is 205041467. The reversal of 205041439 is 934140502.

It is an a-pointer prime, because the next prime (205041467) can be obtained adding 205041439 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205041439 - 2⁷ = 205041311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205041469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102520719 + 102520720.

It is an arithmetic number, because the mean of its divisors is an integer number (102520720).

Almost surely, 2^205041439 is an apocalyptic number.

205041439 is a deficient number, since it is larger than the sum of its proper divisors (1).

205041439 is an equidigital number, since it uses as much as digits as its factorization.

205041439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 205041439 is about 14319.2681028047. The cubic root of 205041439 is about 589.6765813392.

The spelling of 205041439 in words is "two hundred five million, forty-one thousand, four hundred thirty-nine".