13403885 has 8 divisors (see below), whose sum is σ = 17546976. Its totient is φ = 9748240.

The previous prime is 13403869. The next prime is 13403893. The reversal of 13403885 is 58830431.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13403885 - 2⁴ = 13403869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 121799 + ... + 121908.

It is an arithmetic number, because the mean of its divisors is an integer number (2193372).

Almost surely, 2^13403885 is an apocalyptic number.

It is an amenable number.

13403885 is a deficient number, since it is larger than the sum of its proper divisors (4143091).

13403885 is a wasteful number, since it uses less digits than its factorization.

13403885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243723.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 13403885 is about 3661.1316556497. The cubic root of 13403885 is about 237.5437260211.

It can be divided in two parts, 1340 and 3885, that added together give a palindrome (5225).

The spelling of 13403885 in words is "thirteen million, four hundred three thousand, eight hundred eighty-five".