13388963 has 4 divisors (see below), whose sum is σ = 15301680. Its totient is φ = 11476248.

The previous prime is 13388959. The next prime is 13388987. The reversal of 13388963 is 36988331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36988331 = 97 ⋅381323.

It is not a de Polignac number, because 13388963 - 2² = 13388959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13388963.

It is not an unprimeable number, because it can be changed into a prime (13388563) 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, 956348 + ... + 956361.

It is an arithmetic number, because the mean of its divisors is an integer number (3825420).

Almost surely, 2^13388963 is an apocalyptic number.

13388963 is a deficient number, since it is larger than the sum of its proper divisors (1912717).

13388963 is an equidigital number, since it uses as much as digits as its factorization.

13388963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1912716.

The product of its digits is 93312, while the sum is 41.

The square root of 13388963 is about 3659.0931936752. The cubic root of 13388963 is about 237.4555440337.

It can be divided in two parts, 1338 and 8963, that added together give a palindrome (10301).

The spelling of 13388963 in words is "thirteen million, three hundred eighty-eight thousand, nine hundred sixty-three".