11856961 has 4 divisors (see below), whose sum is σ = 11872192. Its totient is φ = 11841732.

The previous prime is 11856953. The next prime is 11856979. The reversal of 11856961 is 16965811.

11856961 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11856961 - 2³ = 11856953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11856961.

It is not an unprimeable number, because it can be changed into a prime (11856161) 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 3 ways as a sum of consecutive naturals, for example, 6381 + ... + 8026.

It is an arithmetic number, because the mean of its divisors is an integer number (2968048).

Almost surely, 2^11856961 is an apocalyptic number.

It is an amenable number.

11856961 is a deficient number, since it is larger than the sum of its proper divisors (15231).

11856961 is an equidigital number, since it uses as much as digits as its factorization.

11856961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15230.

The product of its digits is 12960, while the sum is 37.

The square root of 11856961 is about 3443.3938200560. The cubic root of 11856961 is about 228.0295501353.

The spelling of 11856961 in words is "eleven million, eight hundred fifty-six thousand, nine hundred sixty-one".