11684389 has 4 divisors (see below), whose sum is σ = 12371724. Its totient is φ = 10997056.

The previous prime is 11684383. The next prime is 11684401. The reversal of 11684389 is 98348611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98348611 = 43 ⋅2287177.

It can be written as a sum of positive squares in 2 ways, for example, as 10452289 + 1232100 = 3233^2 + 1110^2 .

It is a cyclic number.

It is not a de Polignac number, because 11684389 - 2⁵ = 11684357 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11684383) 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, 343642 + ... + 343675.

It is an arithmetic number, because the mean of its divisors is an integer number (3092931).

Almost surely, 2^11684389 is an apocalyptic number.

It is an amenable number.

11684389 is a deficient number, since it is larger than the sum of its proper divisors (687335).

11684389 is an equidigital number, since it uses as much as digits as its factorization.

11684389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687334.

The product of its digits is 41472, while the sum is 40.

The square root of 11684389 is about 3418.2435548100. The cubic root of 11684389 is about 226.9178547049.

The spelling of 11684389 in words is "eleven million, six hundred eighty-four thousand, three hundred eighty-nine".