39408085939 has 2 divisors, whose sum is σ = 39408085940. Its totient is φ = 39408085938.

The previous prime is 39408085901. The next prime is 39408085973. The reversal of 39408085939 is 93958080493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39408085939 - 2¹⁵ = 39408053171 is a prime.

It is not a weakly prime, because it can be changed into another prime (39408085979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19704042969 + 19704042970.

It is an arithmetic number, because the mean of its divisors is an integer number (19704042970).

Almost surely, 2^39408085939 is an apocalyptic number.

39408085939 is a deficient number, since it is larger than the sum of its proper divisors (1).

39408085939 is an equidigital number, since it uses as much as digits as its factorization.

39408085939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8398080, while the sum is 58.

The spelling of 39408085939 in words is "thirty-nine billion, four hundred eight million, eighty-five thousand, nine hundred thirty-nine".