39393899 has 2 divisors, whose sum is σ = 39393900. Its totient is φ = 39393898.

The previous prime is 39393847. The next prime is 39393971. The reversal of 39393899 is 99839393.

39393899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39393899 - 2⁸ = 39393643 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39393899.

It is not a weakly prime, because it can be changed into another prime (39393829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19696949 + 19696950.

It is an arithmetic number, because the mean of its divisors is an integer number (19696950).

Almost surely, 2^39393899 is an apocalyptic number.

39393899 is a deficient number, since it is larger than the sum of its proper divisors (1).

39393899 is an equidigital number, since it uses as much as digits as its factorization.

39393899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1417176, while the sum is 53.

The square root of 39393899 is about 6276.4559267153. The cubic root of 39393899 is about 340.2590269486.

The spelling of 39393899 in words is "thirty-nine million, three hundred ninety-three thousand, eight hundred ninety-nine".