11838811 has 4 divisors (see below), whose sum is σ = 11881224. Its totient is φ = 11796400.

The previous prime is 11838793. The next prime is 11838821. The reversal of 11838811 is 11883811.

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

It is a cyclic number.

It is not a de Polignac number, because 11838811 - 2¹¹ = 11836763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11838821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20785 + ... + 21346.

It is an arithmetic number, because the mean of its divisors is an integer number (2970306).

Almost surely, 2^11838811 is an apocalyptic number.

11838811 is a deficient number, since it is larger than the sum of its proper divisors (42413).

11838811 is an equidigital number, since it uses as much as digits as its factorization.

11838811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42412.

The product of its digits is 1536, while the sum is 31.

The square root of 11838811 is about 3440.7573294262. The cubic root of 11838811 is about 227.9131389144.

The spelling of 11838811 in words is "eleven million, eight hundred thirty-eight thousand, eight hundred eleven".