39744137 has 2 divisors, whose sum is σ = 39744138. Its totient is φ = 39744136.

The previous prime is 39744121. The next prime is 39744149. The reversal of 39744137 is 73144793.

It is a happy number.

39744137 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., 39740416 + 3721 = 6304^2 + 61^2 .

It is a cyclic number.

It is not a de Polignac number, because 39744137 - 2⁴ = 39744121 is a 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 39744137.

It is not a weakly prime, because it can be changed into another prime (39744737) 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, 19872068 + 19872069.

It is an arithmetic number, because the mean of its divisors is an integer number (19872069).

Almost surely, 2^39744137 is an apocalyptic number.

It is an amenable number.

39744137 is a deficient number, since it is larger than the sum of its proper divisors (1).

39744137 is an equidigital number, since it uses as much as digits as its factorization.

39744137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 38.

The square root of 39744137 is about 6304.2951231680. The cubic root of 39744137 is about 341.2644297011.

The spelling of 39744137 in words is "thirty-nine million, seven hundred forty-four thousand, one hundred thirty-seven".