11946881 has 2 divisors, whose sum is σ = 11946882. Its totient is φ = 11946880.

The previous prime is 11946853. The next prime is 11946899. The reversal of 11946881 is 18864911.

11946881 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10137856 + 1809025 = 3184^2 + 1345^2 .

It is a cyclic number.

It is not a de Polignac number, because 11946881 - 2¹⁴ = 11930497 is a prime.

It is a super-2 number, since 2×11946881² = 285455931256322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11946581) 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, 5973440 + 5973441.

It is an arithmetic number, because the mean of its divisors is an integer number (5973441).

Almost surely, 2^11946881 is an apocalyptic number.

It is an amenable number.

11946881 is a deficient number, since it is larger than the sum of its proper divisors (1).

11946881 is an equidigital number, since it uses as much as digits as its factorization.

11946881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 38.

The square root of 11946881 is about 3456.4260443412. The cubic root of 11946881 is about 228.6045372984.

The spelling of 11946881 in words is "eleven million, nine hundred forty-six thousand, eight hundred eighty-one".