11638829 has 4 divisors (see below), whose sum is σ = 12323484. Its totient is φ = 10954176.

The previous prime is 11638819. The next prime is 11638873. The reversal of 11638829 is 92883611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92883611 = 97 ⋅957563.

It can be written as a sum of positive squares in 2 ways, for example, as 4721929 + 6916900 = 2173^2 + 2630^2 .

It is a cyclic number.

It is not a de Polignac number, because 11638829 - 2⁸ = 11638573 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 = 11638792 and 11638801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11638819) 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, 342302 + ... + 342335.

It is an arithmetic number, because the mean of its divisors is an integer number (3080871).

Almost surely, 2^11638829 is an apocalyptic number.

It is an amenable number.

11638829 is a deficient number, since it is larger than the sum of its proper divisors (684655).

11638829 is an equidigital number, since it uses as much as digits as its factorization.

11638829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684654.

The product of its digits is 20736, while the sum is 38.

The square root of 11638829 is about 3411.5728044408. The cubic root of 11638829 is about 226.6225363434.

The spelling of 11638829 in words is "eleven million, six hundred thirty-eight thousand, eight hundred twenty-nine".