11881829 has 2 divisors, whose sum is σ = 11881830. Its totient is φ = 11881828.

The previous prime is 11881811. The next prime is 11881843. The reversal of 11881829 is 92818811.

It is a happy number.

11881829 is nontrivially palindromic in base 14.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7480225 + 4401604 = 2735^2 + 2098^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11881829 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11881792 and 11881801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11881879) 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, 5940914 + 5940915.

It is an arithmetic number, because the mean of its divisors is an integer number (5940915).

Almost surely, 2^11881829 is an apocalyptic number.

It is an amenable number.

11881829 is a deficient number, since it is larger than the sum of its proper divisors (1).

11881829 is an equidigital number, since it uses as much as digits as its factorization.

11881829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 38.

The square root of 11881829 is about 3447.0029010722. The cubic root of 11881829 is about 228.1888568092.

The spelling of 11881829 in words is "eleven million, eight hundred eighty-one thousand, eight hundred twenty-nine".