11923911 has 12 divisors (see below), whose sum is σ = 17266392. Its totient is φ = 7929456.

The previous prime is 11923909. The next prime is 11923921. The reversal of 11923911 is 11932911.

It is not a de Polignac number, because 11923911 - 2¹ = 11923909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11923921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2785 + ... + 5621.

It is an arithmetic number, because the mean of its divisors is an integer number (1438866).

Almost surely, 2^11923911 is an apocalyptic number.

11923911 is a deficient number, since it is larger than the sum of its proper divisors (5342481).

11923911 is a wasteful number, since it uses less digits than its factorization.

11923911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3310 (or 3307 counting only the distinct ones).

The product of its digits is 486, while the sum is 27.

The square root of 11923911 is about 3453.1016492423. The cubic root of 11923911 is about 228.4579323623.

The spelling of 11923911 in words is "eleven million, nine hundred twenty-three thousand, nine hundred eleven".