39396739 has 2 divisors, whose sum is σ = 39396740. Its totient is φ = 39396738.

The previous prime is 39396733. The next prime is 39396743. The reversal of 39396739 is 93769393.

It is a strong prime.

It is an emirp because it is prime and its reverse (93769393) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39396739 - 2¹⁹ = 38872451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39396692 and 39396701.

It is not a weakly prime, because it can be changed into another prime (39396733) 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, 19698369 + 19698370.

It is an arithmetic number, because the mean of its divisors is an integer number (19698370).

Almost surely, 2^39396739 is an apocalyptic number.

39396739 is a deficient number, since it is larger than the sum of its proper divisors (1).

39396739 is an equidigital number, since it uses as much as digits as its factorization.

39396739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 826686, while the sum is 49.

The square root of 39396739 is about 6276.6821649658. The cubic root of 39396739 is about 340.2672034466.

The spelling of 39396739 in words is "thirty-nine million, three hundred ninety-six thousand, seven hundred thirty-nine".