11983867 has 4 divisors (see below), whose sum is σ = 13695856. Its totient is φ = 10271880.

The previous prime is 11983859. The next prime is 11983879. The reversal of 11983867 is 76838911.

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 11983867 - 2³ = 11983859 is a prime.

It is a super-2 number, since 2×11983867² = 287226136547378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11983067) 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, 855984 + ... + 855997.

It is an arithmetic number, because the mean of its divisors is an integer number (3423964).

Almost surely, 2^11983867 is an apocalyptic number.

11983867 is a deficient number, since it is larger than the sum of its proper divisors (1711989).

11983867 is an equidigital number, since it uses as much as digits as its factorization.

11983867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711988.

The product of its digits is 72576, while the sum is 43.

The square root of 11983867 is about 3461.7722339865. The cubic root of 11983867 is about 228.8402043043.

The spelling of 11983867 in words is "eleven million, nine hundred eighty-three thousand, eight hundred sixty-seven".