39863449773997 has 2 divisors, whose sum is σ = 39863449773998. Its totient is φ = 39863449773996.

The previous prime is 39863449773971. The next prime is 39863449774019. The reversal of 39863449773997 is 79937794436893.

39863449773997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22172853945636 + 17690595828361 = 4708806^2 + 4206019^2 .

It is a cyclic number.

It is not a de Polignac number, because 39863449773997 - 2¹⁵ = 39863449741229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39863449773937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19931724886998 + 19931724886999.

It is an arithmetic number, because the mean of its divisors is an integer number (19931724886999).

Almost surely, 2^{39863449773997} is an apocalyptic number.

It is an amenable number.

39863449773997 is a deficient number, since it is larger than the sum of its proper divisors (1).

39863449773997 is an equidigital number, since it uses as much as digits as its factorization.

39863449773997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46664771328, while the sum is 88.

The spelling of 39863449773997 in words is "thirty-nine trillion, eight hundred sixty-three billion, four hundred forty-nine million, seven hundred seventy-three thousand, nine hundred ninety-seven".