39605932897 has 2 divisors, whose sum is σ = 39605932898. Its totient is φ = 39605932896.

The previous prime is 39605932879. The next prime is 39605932943. The reversal of 39605932897 is 79823950693.

Together with previous prime (39605932879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21010792401 + 18595140496 = 144951^2 + 136364^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39605932897 is a prime.

It is not a weakly prime, because it can be changed into another prime (39605932837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19802966448 + 19802966449.

It is an arithmetic number, because the mean of its divisors is an integer number (19802966449).

Almost surely, 2^39605932897 is an apocalyptic number.

It is an amenable number.

39605932897 is a deficient number, since it is larger than the sum of its proper divisors (1).

39605932897 is an equidigital number, since it uses as much as digits as its factorization.

39605932897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22044960, while the sum is 61.

The spelling of 39605932897 in words is "thirty-nine billion, six hundred five million, nine hundred thirty-two thousand, eight hundred ninety-seven".