39921208027 has 2 divisors, whose sum is σ = 39921208028. Its totient is φ = 39921208026.

The previous prime is 39921208007. The next prime is 39921208057. The reversal of 39921208027 is 72080212993.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39921208027 - 2¹¹ = 39921205979 is a prime.

It is not a weakly prime, because it can be changed into another prime (39921208007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19960604013 + 19960604014.

It is an arithmetic number, because the mean of its divisors is an integer number (19960604014).

Almost surely, 2^39921208027 is an apocalyptic number.

39921208027 is a deficient number, since it is larger than the sum of its proper divisors (1).

39921208027 is an equidigital number, since it uses as much as digits as its factorization.

39921208027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 39921208027 in words is "thirty-nine billion, nine hundred twenty-one million, two hundred eight thousand, twenty-seven".