11827829 has 4 divisors (see below), whose sum is σ = 12737676. Its totient is φ = 10917984.

The previous prime is 11827813. The next prime is 11827831. The reversal of 11827829 is 92872811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5712100 + 6115729 = 2390^2 + 2473^2 .

It is a cyclic number.

It is not a de Polignac number, because 11827829 - 2⁴ = 11827813 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11827792 and 11827801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11827729) 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, 454904 + ... + 454929.

It is an arithmetic number, because the mean of its divisors is an integer number (3184419).

Almost surely, 2^11827829 is an apocalyptic number.

It is an amenable number.

11827829 is a deficient number, since it is larger than the sum of its proper divisors (909847).

11827829 is an equidigital number, since it uses as much as digits as its factorization.

11827829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909846.

The product of its digits is 16128, while the sum is 38.

The square root of 11827829 is about 3439.1610895682. The cubic root of 11827829 is about 227.8426443233.

The spelling of 11827829 in words is "eleven million, eight hundred twenty-seven thousand, eight hundred twenty-nine".