11910911 has 4 divisors (see below), whose sum is σ = 11991000. Its totient is φ = 11830824.

The previous prime is 11910901. The next prime is 11910923. The reversal of 11910911 is 11901911.

It is a happy number.

11910911 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11910911 - 2¹⁴ = 11894527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11910901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39821 + ... + 40118.

It is an arithmetic number, because the mean of its divisors is an integer number (2997750).

Almost surely, 2^11910911 is an apocalyptic number.

11910911 is a deficient number, since it is larger than the sum of its proper divisors (80089).

11910911 is an equidigital number, since it uses as much as digits as its factorization.

11910911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80088.

The product of its (nonzero) digits is 81, while the sum is 23.

The square root of 11910911 is about 3451.2187702318. The cubic root of 11910911 is about 228.3748770320.

It can be divided in two parts, 11910 and 911, that added together give a palindrome (12821).

The spelling of 11910911 in words is "eleven million, nine hundred ten thousand, nine hundred eleven".