39716939 has 2 divisors, whose sum is σ = 39716940. Its totient is φ = 39716938.

The previous prime is 39716923. The next prime is 39716953. The reversal of 39716939 is 93961793.

It is a strong prime.

It is an emirp because it is prime and its reverse (93961793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39716939 - 2⁴ = 39716923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39716893 and 39716902.

It is not a weakly prime, because it can be changed into another prime (39716909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19858469 + 19858470.

It is an arithmetic number, because the mean of its divisors is an integer number (19858470).

Almost surely, 2^39716939 is an apocalyptic number.

39716939 is a deficient number, since it is larger than the sum of its proper divisors (1).

39716939 is an equidigital number, since it uses as much as digits as its factorization.

39716939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 275562, while the sum is 47.

The square root of 39716939 is about 6302.1376532094. The cubic root of 39716939 is about 341.1865664093.

The spelling of 39716939 in words is "thirty-nine million, seven hundred sixteen thousand, nine hundred thirty-nine".