11438863 has 4 divisors (see below), whose sum is σ = 11511880. Its totient is φ = 11365848.

The previous prime is 11438857. The next prime is 11438873. The reversal of 11438863 is 36883411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36883411 = 151 ⋅244261.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11438863 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 (11438803) 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, 36273 + ... + 36586.

It is an arithmetic number, because the mean of its divisors is an integer number (2877970).

Almost surely, 2^11438863 is an apocalyptic number.

11438863 is a deficient number, since it is larger than the sum of its proper divisors (73017).

11438863 is an equidigital number, since it uses as much as digits as its factorization.

11438863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73016.

The product of its digits is 13824, while the sum is 34.

The square root of 11438863 is about 3382.1388203325. The cubic root of 11438863 is about 225.3171691563.

The spelling of 11438863 in words is "eleven million, four hundred thirty-eight thousand, eight hundred sixty-three".