239278448687 has 2 divisors, whose sum is σ = 239278448688. Its totient is φ = 239278448686.

The previous prime is 239278448639. The next prime is 239278448701. The reversal of 239278448687 is 786844872932.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239278448687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239278448627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119639224343 + 119639224344.

It is an arithmetic number, because the mean of its divisors is an integer number (119639224344).

Almost surely, 2^239278448687 is an apocalyptic number.

239278448687 is a deficient number, since it is larger than the sum of its proper divisors (1).

239278448687 is an equidigital number, since it uses as much as digits as its factorization.

239278448687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 260112384, while the sum is 68.

The spelling of 239278448687 in words is "two hundred thirty-nine billion, two hundred seventy-eight million, four hundred forty-eight thousand, six hundred eighty-seven".