13388895 has 40 divisors (see below), whose sum is σ = 25857216. Its totient is φ = 6588864.

The previous prime is 13388887. The next prime is 13388899. The reversal of 13388895 is 59888331.

It is not a de Polignac number, because 13388895 - 2³ = 13388887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 13388895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13388899) 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 39 ways as a sum of consecutive naturals, for example, 3994 + ... + 6536.

Almost surely, 2^13388895 is an apocalyptic number.

13388895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13388895 is a deficient number, since it is larger than the sum of its proper divisors (12468321).

13388895 is a wasteful number, since it uses less digits than its factorization.

13388895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573 (or 2564 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 13388895 is about 3659.0839017437. The cubic root of 13388895 is about 237.4551420358.

The spelling of 13388895 in words is "thirteen million, three hundred eighty-eight thousand, eight hundred ninety-five".