13404406 has 8 divisors (see below), whose sum is σ = 20382264. Its totient is φ = 6610320.

The previous prime is 13404403. The next prime is 13404407. The reversal of 13404406 is 60440431.

It is a happy number.

13404406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13404403) 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, 45760 + ... + 46051.

It is an arithmetic number, because the mean of its divisors is an integer number (2547783).

Almost surely, 2^13404406 is an apocalyptic number.

13404406 is a deficient number, since it is larger than the sum of its proper divisors (6977858).

13404406 is an equidigital number, since it uses as much as digits as its factorization.

13404406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91886.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 13404406 is about 3661.2028078215. The cubic root of 13404406 is about 237.5468037029.

Adding to 13404406 its reverse (60440431), we get a palindrome (73844837).

The spelling of 13404406 in words is "thirteen million, four hundred four thousand, four hundred six".