3975663248989 has 2 divisors, whose sum is σ = 3975663248990. Its totient is φ = 3975663248988.

The previous prime is 3975663248951. The next prime is 3975663249001. The reversal of 3975663248989 is 9898423665793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3874893825625 + 100769423364 = 1968475^2 + 317442^2 .

It is a cyclic number.

It is not a de Polignac number, because 3975663248989 - 2¹⁵ = 3975663216221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3975663248939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1987831624494 + 1987831624495.

It is an arithmetic number, because the mean of its divisors is an integer number (1987831624495).

Almost surely, 2^{3975663248989} is an apocalyptic number.

It is an amenable number.

3975663248989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3975663248989 is an equidigital number, since it uses as much as digits as its factorization.

3975663248989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4232632320, while the sum is 79.

The spelling of 3975663248989 in words is "three trillion, nine hundred seventy-five billion, six hundred sixty-three million, two hundred forty-eight thousand, nine hundred eighty-nine".