39648137 has 2 divisors, whose sum is σ = 39648138. Its totient is φ = 39648136.

The previous prime is 39648083. The next prime is 39648139. The reversal of 39648137 is 73184693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36192256 + 3455881 = 6016^2 + 1859^2 .

It is a cyclic number.

It is not a de Polignac number, because 39648137 - 2¹² = 39644041 is a prime.

Together with 39648139, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 39648094 and 39648103.

It is not a weakly prime, because it can be changed into another prime (39648139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19824068 + 19824069.

It is an arithmetic number, because the mean of its divisors is an integer number (19824069).

Almost surely, 2^39648137 is an apocalyptic number.

It is an amenable number.

39648137 is a deficient number, since it is larger than the sum of its proper divisors (1).

39648137 is an equidigital number, since it uses as much as digits as its factorization.

39648137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 39648137 is about 6296.6766631295. The cubic root of 39648137 is about 340.9894390482.

The spelling of 39648137 in words is "thirty-nine million, six hundred forty-eight thousand, one hundred thirty-seven".