11948771 has 2 divisors, whose sum is σ = 11948772. Its totient is φ = 11948770.

The previous prime is 11948767. The next prime is 11948779. The reversal of 11948771 is 17784911.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11948771 - 2² = 11948767 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11948779) 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, 5974385 + 5974386.

It is an arithmetic number, because the mean of its divisors is an integer number (5974386).

Almost surely, 2^11948771 is an apocalyptic number.

11948771 is a deficient number, since it is larger than the sum of its proper divisors (1).

11948771 is an equidigital number, since it uses as much as digits as its factorization.

11948771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 38.

The square root of 11948771 is about 3456.6994373246. The cubic root of 11948771 is about 228.6165917639.

The spelling of 11948771 in words is "eleven million, nine hundred forty-eight thousand, seven hundred seventy-one".