13408933 has 4 divisors (see below), whose sum is σ = 13871340. Its totient is φ = 12946528.

The previous prime is 13408909. The next prime is 13408939. The reversal of 13408933 is 33980431.

13408933 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8538084 + 4870849 = 2922^2 + 2207^2 .

It is not a de Polignac number, because 13408933 - 2¹³ = 13400741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13408895 and 13408904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13408939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231160 + ... + 231217.

It is an arithmetic number, because the mean of its divisors is an integer number (3467835).

Almost surely, 2^13408933 is an apocalyptic number.

It is an amenable number.

13408933 is a deficient number, since it is larger than the sum of its proper divisors (462407).

13408933 is an equidigital number, since it uses as much as digits as its factorization.

13408933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462406.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 13408933 is about 3661.8209950788. The cubic root of 13408933 is about 237.5735425066.

It can be divided in two parts, 13408 and 933, that added together give a palindrome (14341).

The spelling of 13408933 in words is "thirteen million, four hundred eight thousand, nine hundred thirty-three".