3942239776493 has 2 divisors, whose sum is σ = 3942239776494. Its totient is φ = 3942239776492.

The previous prime is 3942239776487. The next prime is 3942239776523. The reversal of 3942239776493 is 3946779322493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2110215264964 + 1832024511529 = 1452658^2 + 1353523^2 .

It is a cyclic number.

It is not a de Polignac number, because 3942239776493 - 2¹⁸ = 3942239514349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3942239770493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1971119888246 + 1971119888247.

It is an arithmetic number, because the mean of its divisors is an integer number (1971119888247).

Almost surely, 2^{3942239776493} is an apocalyptic number.

It is an amenable number.

3942239776493 is a deficient number, since it is larger than the sum of its proper divisors (1).

3942239776493 is an equidigital number, since it uses as much as digits as its factorization.

3942239776493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 370355328, while the sum is 68.

The spelling of 3942239776493 in words is "three trillion, nine hundred forty-two billion, two hundred thirty-nine million, seven hundred seventy-six thousand, four hundred ninety-three".