93491971896397 has 2 divisors, whose sum is σ = 93491971896398. Its totient is φ = 93491971896396.

The previous prime is 93491971896343. The next prime is 93491971896419. The reversal of 93491971896397 is 79369817919439.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59877092804841 + 33614879091556 = 7738029^2 + 5797834^2 .

It is a cyclic number.

It is not a de Polignac number, because 93491971896397 - 2¹⁵ = 93491971863629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (93491971896497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46745985948198 + 46745985948199.

It is an arithmetic number, because the mean of its divisors is an integer number (46745985948199).

Almost surely, 2^{93491971896397} is an apocalyptic number.

It is an amenable number.

93491971896397 is a deficient number, since it is larger than the sum of its proper divisors (1).

93491971896397 is an equidigital number, since it uses as much as digits as its factorization.

93491971896397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4999796928, while the sum is 85.

The spelling of 93491971896397 in words is "ninety-three trillion, four hundred ninety-one billion, nine hundred seventy-one million, eight hundred ninety-six thousand, three hundred ninety-seven".