239858074693 has 2 divisors, whose sum is σ = 239858074694. Its totient is φ = 239858074692.

The previous prime is 239858074681. The next prime is 239858074699. The reversal of 239858074693 is 396470858932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165537500769 + 74320573924 = 406863^2 + 272618^2 .

It is a cyclic number.

It is not a de Polignac number, because 239858074693 - 2⁵ = 239858074661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239858074699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119929037346 + 119929037347.

It is an arithmetic number, because the mean of its divisors is an integer number (119929037347).

Almost surely, 2^239858074693 is an apocalyptic number.

It is an amenable number.

239858074693 is a deficient number, since it is larger than the sum of its proper divisors (1).

239858074693 is an equidigital number, since it uses as much as digits as its factorization.

239858074693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78382080, while the sum is 64.

The spelling of 239858074693 in words is "two hundred thirty-nine billion, eight hundred fifty-eight million, seventy-four thousand, six hundred ninety-three".