39426819631939 has 2 divisors, whose sum is σ = 39426819631940. Its totient is φ = 39426819631938.

The previous prime is 39426819631861. The next prime is 39426819631987. The reversal of 39426819631939 is 93913691862493.

39426819631939 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 is an emirp because it is prime and its reverse (93913691862493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39426819631939 - 2¹³ = 39426819623747 is a prime.

It is not a weakly prime, because it can be changed into another prime (39426810631939) 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, 19713409815969 + 19713409815970.

It is an arithmetic number, because the mean of its divisors is an integer number (19713409815970).

Almost surely, 2^{39426819631939} is an apocalyptic number.

39426819631939 is a deficient number, since it is larger than the sum of its proper divisors (1).

39426819631939 is an equidigital number, since it uses as much as digits as its factorization.

39426819631939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408146688, while the sum is 73.

The spelling of 39426819631939 in words is "thirty-nine trillion, four hundred twenty-six billion, eight hundred nineteen million, six hundred thirty-one thousand, nine hundred thirty-nine".