11845911 has 32 divisors (see below), whose sum is σ = 20736000. Its totient is φ = 5827680.

The previous prime is 11845909. The next prime is 11845969. The reversal of 11845911 is 11954811.

It is a happy number.

It is not a de Polignac number, because 11845911 - 2¹ = 11845909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11840911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3040 + ... + 5738.

It is an arithmetic number, because the mean of its divisors is an integer number (648000).

Almost surely, 2^11845911 is an apocalyptic number.

11845911 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11845911 is a deficient number, since it is larger than the sum of its proper divisors (8890089).

11845911 is a wasteful number, since it uses less digits than its factorization.

11845911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2739.

The product of its digits is 1440, while the sum is 30.

The square root of 11845911 is about 3441.7889243822. The cubic root of 11845911 is about 227.9586913466.

Subtracting 11845911 from its reverse (11954811), we obtain a square (108900 = 330²).

The spelling of 11845911 in words is "eleven million, eight hundred forty-five thousand, nine hundred eleven".