11816959 has 24 divisors (see below), whose sum is σ = 15265152. Its totient is φ = 8885520.

The previous prime is 11816951. The next prime is 11816977. The reversal of 11816959 is 95961811.

It is not a de Polignac number, because 11816959 - 2³ = 11816951 is a prime.

Its product of digits (19440) is a multiple of the sum of its prime divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11816951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142332 + ... + 142414.

It is an arithmetic number, because the mean of its divisors is an integer number (636048).

Almost surely, 2^11816959 is an apocalyptic number.

11816959 is a deficient number, since it is larger than the sum of its proper divisors (3448193).

11816959 is an equidigital number, since it uses as much as digits as its factorization.

11816959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 144 counting only the distinct ones).

The product of its digits is 19440, while the sum is 40.

The square root of 11816959 is about 3437.5803990598. The cubic root of 11816959 is about 227.7728256883.

The spelling of 11816959 in words is "eleven million, eight hundred sixteen thousand, nine hundred fifty-nine".