3243205439 has 2 divisors, whose sum is σ = 3243205440. Its totient is φ = 3243205438.

The previous prime is 3243205373. The next prime is 3243205453. The reversal of 3243205439 is 9345023423.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3243205439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3243205399 and 3243205408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3243205489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1621602719 + 1621602720.

It is an arithmetic number, because the mean of its divisors is an integer number (1621602720).

Almost surely, 2^3243205439 is an apocalyptic number.

3243205439 is a deficient number, since it is larger than the sum of its proper divisors (1).

3243205439 is an equidigital number, since it uses as much as digits as its factorization.

3243205439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 35.

The square root of 3243205439 is about 56949.1478338351. The cubic root of 3243205439 is about 1480.2150647716.

The spelling of 3243205439 in words is "three billion, two hundred forty-three million, two hundred five thousand, four hundred thirty-nine".