11911912 has 8 divisors (see below), whose sum is σ = 22334850. Its totient is φ = 5955952.

The previous prime is 11911873. The next prime is 11911919. The reversal of 11911912 is 21911911.

11911912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11249316 + 662596 = 3354^2 + 814^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (11911919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744487 + ... + 744502.

Almost surely, 2^11911912 is an apocalyptic number.

It is an amenable number.

11911912 is a deficient number, since it is larger than the sum of its proper divisors (10422938).

11911912 is a wasteful number, since it uses less digits than its factorization.

11911912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488995 (or 1488991 counting only the distinct ones).

The product of its digits is 162, while the sum is 25.

The square root of 11911912 is about 3451.3637884176. The cubic root of 11911912 is about 228.3812744393.

Subtracting 11911912 from its reverse (21911911), we obtain a palindrome (9999999).

The spelling of 11911912 in words is "eleven million, nine hundred eleven thousand, nine hundred twelve".