11689279 has 4 divisors (see below), whose sum is σ = 13359184. Its totient is φ = 10019376.

The previous prime is 11689277. The next prime is 11689303. The reversal of 11689279 is 97298611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97298611 = 59 ⋅1649129.

It is a cyclic number.

It is not a de Polignac number, because 11689279 - 2¹ = 11689277 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 (11689273) 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, 834942 + ... + 834955.

It is an arithmetic number, because the mean of its divisors is an integer number (3339796).

Almost surely, 2^11689279 is an apocalyptic number.

11689279 is a deficient number, since it is larger than the sum of its proper divisors (1669905).

11689279 is an equidigital number, since it uses as much as digits as its factorization.

11689279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669904.

The product of its digits is 54432, while the sum is 43.

The square root of 11689279 is about 3418.9587596226. The cubic root of 11689279 is about 226.9495058693.

The spelling of 11689279 in words is "eleven million, six hundred eighty-nine thousand, two hundred seventy-nine".