11809916 has 6 divisors (see below), whose sum is σ = 20667360. Its totient is φ = 5904956.

The previous prime is 11809913. The next prime is 11809933. The reversal of 11809916 is 61990811.

11809916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11809913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1476236 + ... + 1476243.

It is an arithmetic number, because the mean of its divisors is an integer number (3444560).

Almost surely, 2^11809916 is an apocalyptic number.

It is an amenable number.

11809916 is a deficient number, since it is larger than the sum of its proper divisors (8857444).

11809916 is a wasteful number, since it uses less digits than its factorization.

11809916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2952483 (or 2952481 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 35.

The square root of 11809916 is about 3436.5558339710. Note that the first 3 decimals coincide. The cubic root of 11809916 is about 227.7275652333.

The spelling of 11809916 in words is "eleven million, eight hundred nine thousand, nine hundred sixteen".