11968961 has 2 divisors, whose sum is σ = 11968962. Its totient is φ = 11968960.

The previous prime is 11968951. The next prime is 11968981. The reversal of 11968961 is 16986911.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10660225 + 1308736 = 3265^2 + 1144^2 .

It is an emirp because it is prime and its reverse (16986911) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 19689611 and 11698691.

It is a cyclic number.

It is not a de Polignac number, because 11968961 - 2⁶ = 11968897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11968951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5984480 + 5984481.

It is an arithmetic number, because the mean of its divisors is an integer number (5984481).

Almost surely, 2^11968961 is an apocalyptic number.

It is an amenable number.

11968961 is a deficient number, since it is larger than the sum of its proper divisors (1).

11968961 is an equidigital number, since it uses as much as digits as its factorization.

11968961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 41.

The square root of 11968961 is about 3459.6186205997. The cubic root of 11968961 is about 228.7452848222.

The spelling of 11968961 in words is "eleven million, nine hundred sixty-eight thousand, nine hundred sixty-one".