239883782609 has 2 divisors, whose sum is σ = 239883782610. Its totient is φ = 239883782608.

The previous prime is 239883782581. The next prime is 239883782669. The reversal of 239883782609 is 906287388932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208862710225 + 31021072384 = 457015^2 + 176128^2 .

It is a cyclic number.

It is not a de Polignac number, because 239883782609 - 2²⁰ = 239882734033 is a prime.

It is not a weakly prime, because it can be changed into another prime (239883782669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119941891304 + 119941891305.

It is an arithmetic number, because the mean of its divisors is an integer number (119941891305).

Almost surely, 2^239883782609 is an apocalyptic number.

It is an amenable number.

239883782609 is a deficient number, since it is larger than the sum of its proper divisors (1).

239883782609 is an equidigital number, since it uses as much as digits as its factorization.

239883782609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62705664, while the sum is 65.

The spelling of 239883782609 in words is "two hundred thirty-nine billion, eight hundred eighty-three million, seven hundred eighty-two thousand, six hundred nine".