11988279 has 24 divisors (see below), whose sum is σ = 17870112. Its totient is φ = 7741440.

The previous prime is 11988253. The next prime is 11988287. The reversal of 11988279 is 97288911.

It is not a de Polignac number, because 11988279 - 2¹¹ = 11986231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11988979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46519 + ... + 46775.

It is an arithmetic number, because the mean of its divisors is an integer number (744588).

Almost surely, 2^11988279 is an apocalyptic number.

11988279 is a deficient number, since it is larger than the sum of its proper divisors (5881833).

11988279 is a wasteful number, since it uses less digits than its factorization.

11988279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 404 counting only the distinct ones).

The product of its digits is 72576, while the sum is 45.

The square root of 11988279 is about 3462.4094211979. The cubic root of 11988279 is about 228.8682842528.

The spelling of 11988279 in words is "eleven million, nine hundred eighty-eight thousand, two hundred seventy-nine".