39740137 has 2 divisors, whose sum is σ = 39740138. Its totient is φ = 39740136.

The previous prime is 39740123. The next prime is 39740143. The reversal of 39740137 is 73104793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30074256 + 9665881 = 5484^2 + 3109^2 .

It is an emirp because it is prime and its reverse (73104793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39740137 - 2⁷ = 39740009 is a prime.

It is not a weakly prime, because it can be changed into another prime (39740147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19870068 + 19870069.

It is an arithmetic number, because the mean of its divisors is an integer number (19870069).

Almost surely, 2^39740137 is an apocalyptic number.

It is an amenable number.

39740137 is a deficient number, since it is larger than the sum of its proper divisors (1).

39740137 is an equidigital number, since it uses as much as digits as its factorization.

39740137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 39740137 is about 6303.9778711541. The cubic root of 39740137 is about 341.2529806034.

The spelling of 39740137 in words is "thirty-nine million, seven hundred forty thousand, one hundred thirty-seven".