11983287 has 4 divisors (see below), whose sum is σ = 15977720. Its totient is φ = 7988856.

The previous prime is 11983277. The next prime is 11983289. The reversal of 11983287 is 78238911.

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

It is not a de Polignac number, because 11983287 - 2⁷ = 11983159 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 (11983289) 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, 1997212 + ... + 1997217.

It is an arithmetic number, because the mean of its divisors is an integer number (3994430).

Almost surely, 2^11983287 is an apocalyptic number.

11983287 is a deficient number, since it is larger than the sum of its proper divisors (3994433).

11983287 is an equidigital number, since it uses as much as digits as its factorization.

11983287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3994432.

The product of its digits is 24192, while the sum is 39.

The square root of 11983287 is about 3461.6884608526. The cubic root of 11983287 is about 228.8365124114.

The spelling of 11983287 in words is "eleven million, nine hundred eighty-three thousand, two hundred eighty-seven".