11855963 has 8 divisors (see below), whose sum is σ = 13571328. Its totient is φ = 10146024.

The previous prime is 11855959. The next prime is 11855989. The reversal of 11855963 is 36955811.

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

It is not a de Polignac number, because 11855963 - 2² = 11855959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11855903) 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, 6020 + ... + 7742.

It is an arithmetic number, because the mean of its divisors is an integer number (1696416).

Almost surely, 2^11855963 is an apocalyptic number.

11855963 is a deficient number, since it is larger than the sum of its proper divisors (1715365).

11855963 is an equidigital number, since it uses as much as digits as its factorization.

11855963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2713.

The product of its digits is 32400, while the sum is 38.

The square root of 11855963 is about 3443.2489018368. The cubic root of 11855963 is about 228.0231522093.

The spelling of 11855963 in words is "eleven million, eight hundred fifty-five thousand, nine hundred sixty-three".