11826109 has 4 divisors (see below), whose sum is σ = 11843104. Its totient is φ = 11809116.

The previous prime is 11826091. The next prime is 11826119. The reversal of 11826109 is 90162811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11826109 - 2¹⁷ = 11695037 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 (11826119) 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, 7407 + ... + 8860.

It is an arithmetic number, because the mean of its divisors is an integer number (2960776).

Almost surely, 2^11826109 is an apocalyptic number.

It is an amenable number.

11826109 is a deficient number, since it is larger than the sum of its proper divisors (16995).

11826109 is an equidigital number, since it uses as much as digits as its factorization.

11826109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16994.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 11826109 is about 3438.9110194944. The cubic root of 11826109 is about 227.8315995140.

It can be divided in two parts, 11826 and 109, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 11826109 in words is "eleven million, eight hundred twenty-six thousand, one hundred nine".