12939482197 has 2 divisors, whose sum is σ = 12939482198. Its totient is φ = 12939482196.

The previous prime is 12939482173. The next prime is 12939482219. The reversal of 12939482197 is 79128493921.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11165303556 + 1774178641 = 105666^2 + 42121^2 .

It is a cyclic number.

It is not a de Polignac number, because 12939482197 - 2⁷ = 12939482069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12939482137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6469741098 + 6469741099.

It is an arithmetic number, because the mean of its divisors is an integer number (6469741099).

Almost surely, 2^12939482197 is an apocalyptic number.

It is an amenable number.

12939482197 is a deficient number, since it is larger than the sum of its proper divisors (1).

12939482197 is an equidigital number, since it uses as much as digits as its factorization.

12939482197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 55.

The spelling of 12939482197 in words is "twelve billion, nine hundred thirty-nine million, four hundred eighty-two thousand, one hundred ninety-seven".