3968775517 has 4 divisors (see below), whose sum is σ = 4535743456. Its totient is φ = 3401807580.

The previous prime is 3968775469. The next prime is 3968775529. The reversal of 3968775517 is 7155778693.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3968775517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3968775017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283483959 + ... + 283483972.

It is an arithmetic number, because the mean of its divisors is an integer number (1133935864).

Almost surely, 2^3968775517 is an apocalyptic number.

It is an amenable number.

3968775517 is a deficient number, since it is larger than the sum of its proper divisors (566967939).

3968775517 is an equidigital number, since it uses as much as digits as its factorization.

3968775517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566967938.

The product of its digits is 11113200, while the sum is 58.

The square root of 3968775517 is about 62998.2183636966. The cubic root of 3968775517 is about 1583.2597760054.

The spelling of 3968775517 in words is "three billion, nine hundred sixty-eight million, seven hundred seventy-five thousand, five hundred seventeen".