11709912 has 32 divisors (see below), whose sum is σ = 29372400. Its totient is φ = 3890304.

The previous prime is 11709883. The next prime is 11709913. The reversal of 11709912 is 21990711.

It is a self number, because there is not a number n which added to its sum of digits gives 11709912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11709913) 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 in 7 ways as a sum of consecutive naturals, for example, 8914 + ... + 10142.

Almost surely, 2^11709912 is an apocalyptic number.

11709912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11709912 is an abundant number, since it is smaller than the sum of its proper divisors (17662488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11709912 is a wasteful number, since it uses less digits than its factorization.

11709912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635 (or 1631 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 30.

The square root of 11709912 is about 3421.9748684057. The cubic root of 11709912 is about 227.0829585457.

It can be divided in two parts, 11709 and 912, that added together give a palindrome (12621).

The spelling of 11709912 in words is "eleven million, seven hundred nine thousand, nine hundred twelve".