13638883 has 4 divisors (see below), whose sum is σ = 13929120. Its totient is φ = 13348648.

The previous prime is 13638881. The next prime is 13638899. The reversal of 13638883 is 38883631.

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 13638883 - 2¹ = 13638881 is a prime.

It is a super-3 number, since 3×13638883³ (a number of 22 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13638881) 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, 145048 + ... + 145141.

It is an arithmetic number, because the mean of its divisors is an integer number (3482280).

Almost surely, 2^13638883 is an apocalyptic number.

13638883 is a deficient number, since it is larger than the sum of its proper divisors (290237).

13638883 is an equidigital number, since it uses as much as digits as its factorization.

13638883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290236.

The product of its digits is 82944, while the sum is 40.

The square root of 13638883 is about 3693.0858370745. The cubic root of 13638883 is about 238.9239033427.

The spelling of 13638883 in words is "thirteen million, six hundred thirty-eight thousand, eight hundred eighty-three".