39239566097 has 2 divisors, whose sum is σ = 39239566098. Its totient is φ = 39239566096.

The previous prime is 39239566049. The next prime is 39239566127. The reversal of 39239566097 is 79066593293.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31696817296 + 7542748801 = 178036^2 + 86849^2 .

It is a cyclic number.

It is not a de Polignac number, because 39239566097 - 2¹⁸ = 39239303953 is a prime.

It is not a weakly prime, because it can be changed into another prime (39239566697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19619783048 + 19619783049.

It is an arithmetic number, because the mean of its divisors is an integer number (19619783049).

Almost surely, 2^39239566097 is an apocalyptic number.

It is an amenable number.

39239566097 is a deficient number, since it is larger than the sum of its proper divisors (1).

39239566097 is an equidigital number, since it uses as much as digits as its factorization.

39239566097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16533720, while the sum is 59.

The spelling of 39239566097 in words is "thirty-nine billion, two hundred thirty-nine million, five hundred sixty-six thousand, ninety-seven".