11915841 has 16 divisors (see below), whose sum is σ = 18330624. Its totient is φ = 6744144.

The previous prime is 11915837. The next prime is 11915843. The reversal of 11915841 is 14851911.

It is a happy number.

It is not a de Polignac number, because 11915841 - 2² = 11915837 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11915799 and 11915808.

It is not an unprimeable number, because it can be changed into a prime (11915843) 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 15 ways as a sum of consecutive naturals, for example, 405 + ... + 4898.

It is an arithmetic number, because the mean of its divisors is an integer number (1145664).

Almost surely, 2^11915841 is an apocalyptic number.

It is an amenable number.

11915841 is a deficient number, since it is larger than the sum of its proper divisors (6414783).

11915841 is a wasteful number, since it uses less digits than its factorization.

11915841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5420.

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

The square root of 11915841 is about 3451.9329367761. The cubic root of 11915841 is about 228.4063812788.

The spelling of 11915841 in words is "eleven million, nine hundred fifteen thousand, eight hundred forty-one".