11866279 has 4 divisors (see below), whose sum is σ = 12490840. Its totient is φ = 11241720.

The previous prime is 11866271. The next prime is 11866313. The reversal of 11866279 is 97266811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97266811 = 661 ⋅147151.

It is a cyclic number.

It is not a de Polignac number, because 11866279 - 2³ = 11866271 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 (11866271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312252 + ... + 312289.

It is an arithmetic number, because the mean of its divisors is an integer number (3122710).

Almost surely, 2^11866279 is an apocalyptic number.

11866279 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

11866279 is a deficient number, since it is larger than the sum of its proper divisors (624561).

11866279 is an equidigital number, since it uses as much as digits as its factorization.

11866279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624560.

The product of its digits is 36288, while the sum is 40.

The square root of 11866279 is about 3444.7465799388. The cubic root of 11866279 is about 228.0892681634.

The spelling of 11866279 in words is "eleven million, eight hundred sixty-six thousand, two hundred seventy-nine".