11916863 has 4 divisors (see below), whose sum is σ = 13619280. Its totient is φ = 10214448.

The previous prime is 11916851. The next prime is 11916869. The reversal of 11916863 is 36861911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11916863 - 2⁶ = 11916799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11916869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 851198 + ... + 851211.

It is an arithmetic number, because the mean of its divisors is an integer number (3404820).

Almost surely, 2^11916863 is an apocalyptic number.

11916863 is a deficient number, since it is larger than the sum of its proper divisors (1702417).

11916863 is an equidigital number, since it uses as much as digits as its factorization.

11916863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702416.

The product of its digits is 7776, while the sum is 35.

The square root of 11916863 is about 3452.0809666055. The cubic root of 11916863 is about 228.4129110921.

The spelling of 11916863 in words is "eleven million, nine hundred sixteen thousand, eight hundred sixty-three".