11849881 has 2 divisors, whose sum is σ = 11849882. Its totient is φ = 11849880.

The previous prime is 11849869. The next prime is 11849891. The reversal of 11849881 is 18894811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7376656 + 4473225 = 2716^2 + 2115^2 .

It is a cyclic number.

It is not a de Polignac number, because 11849881 - 2¹³ = 11841689 is a prime.

It is a super-2 number, since 2×11849881² = 280839359428322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11849801) 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, 5924940 + 5924941.

It is an arithmetic number, because the mean of its divisors is an integer number (5924941).

Almost surely, 2^11849881 is an apocalyptic number.

It is an amenable number.

11849881 is a deficient number, since it is larger than the sum of its proper divisors (1).

11849881 is an equidigital number, since it uses as much as digits as its factorization.

11849881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 40.

The square root of 11849881 is about 3442.3656110297. The cubic root of 11849881 is about 227.9841542799.

The spelling of 11849881 in words is "eleven million, eight hundred forty-nine thousand, eight hundred eighty-one".