393338442108277 has 2 divisors, whose sum is σ = 393338442108278. Its totient is φ = 393338442108276.

The previous prime is 393338442108239. The next prime is 393338442108289. The reversal of 393338442108277 is 772801244833393.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244981316230641 + 148357125877636 = 15651879^2 + 12180194^2 .

It is a cyclic number.

It is not a de Polignac number, because 393338442108277 - 2³⁵ = 393304082369909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (393338442108077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196669221054138 + 196669221054139.

It is an arithmetic number, because the mean of its divisors is an integer number (196669221054139).

Almost surely, 2^{393338442108277} is an apocalyptic number.

It is an amenable number.

393338442108277 is a deficient number, since it is larger than the sum of its proper divisors (1).

393338442108277 is an equidigital number, since it uses as much as digits as its factorization.

393338442108277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 146313216, while the sum is 64.

The spelling of 393338442108277 in words is "three hundred ninety-three trillion, three hundred thirty-eight billion, four hundred forty-two million, one hundred eight thousand, two hundred seventy-seven".