39606888397 has 2 divisors, whose sum is σ = 39606888398. Its totient is φ = 39606888396.

The previous prime is 39606888341. The next prime is 39606888403. The reversal of 39606888397 is 79388860693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28678067716 + 10928820681 = 169346^2 + 104541^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39606888397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39606883397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19803444198 + 19803444199.

It is an arithmetic number, because the mean of its divisors is an integer number (19803444199).

Almost surely, 2^39606888397 is an apocalyptic number.

It is an amenable number.

39606888397 is a deficient number, since it is larger than the sum of its proper divisors (1).

39606888397 is an equidigital number, since it uses as much as digits as its factorization.

39606888397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94058496, while the sum is 67.

The spelling of 39606888397 in words is "thirty-nine billion, six hundred six million, eight hundred eighty-eight thousand, three hundred ninety-seven".