39799393 has 2 divisors, whose sum is σ = 39799394. Its totient is φ = 39799392.

The previous prime is 39799373. The next prime is 39799411. The reversal of 39799393 is 39399793.

39799393 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., 35605089 + 4194304 = 5967^2 + 2048^2 .

It is an emirp because it is prime and its reverse (39399793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39799393 - 2⁹ = 39798881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39799393.

It is not a weakly prime, because it can be changed into another prime (39799373) 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, 19899696 + 19899697.

It is an arithmetic number, because the mean of its divisors is an integer number (19899697).

Almost surely, 2^39799393 is an apocalyptic number.

It is an amenable number.

39799393 is a deficient number, since it is larger than the sum of its proper divisors (1).

39799393 is an equidigital number, since it uses as much as digits as its factorization.

39799393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1240029, while the sum is 52.

The square root of 39799393 is about 6308.6760100674. The cubic root of 39799393 is about 341.4225089938.

The spelling of 39799393 in words is "thirty-nine million, seven hundred ninety-nine thousand, three hundred ninety-three".