11711909 has 8 divisors (see below), whose sum is σ = 12802752. Its totient is φ = 10625440.

The previous prime is 11711879. The next prime is 11711951. The reversal of 11711909 is 90911711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11711909 - 2²⁰ = 10663333 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 (11711009) 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, 7457 + ... + 8889.

It is an arithmetic number, because the mean of its divisors is an integer number (1600344).

Almost surely, 2^11711909 is an apocalyptic number.

It is an amenable number.

11711909 is a deficient number, since it is larger than the sum of its proper divisors (1090843).

11711909 is a wasteful number, since it uses less digits than its factorization.

11711909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187.

The product of its (nonzero) digits is 567, while the sum is 29.

The square root of 11711909 is about 3422.2666465371. The cubic root of 11711909 is about 227.0958666670.

The spelling of 11711909 in words is "eleven million, seven hundred eleven thousand, nine hundred nine".