13404005 has 4 divisors (see below), whose sum is σ = 16084812. Its totient is φ = 10723200.

The previous prime is 13403989. The next prime is 13404011. The reversal of 13404005 is 50040431.

13404005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50040431 = 7 ⋅7148633.

It can be written as a sum of positive squares in 2 ways, for example, as 3806401 + 9597604 = 1951^2 + 3098^2 .

It is not a de Polignac number, because 13404005 - 2⁴ = 13403989 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1340396 + ... + 1340405.

It is an arithmetic number, because the mean of its divisors is an integer number (4021203).

Almost surely, 2^13404005 is an apocalyptic number.

It is an amenable number.

13404005 is a deficient number, since it is larger than the sum of its proper divisors (2680807).

13404005 is an equidigital number, since it uses as much as digits as its factorization.

13404005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680806.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 13404005 is about 3661.1480439884. The cubic root of 13404005 is about 237.5444348993.

Adding to 13404005 its reverse (50040431), we get a palindrome (63444436).

The spelling of 13404005 in words is "thirteen million, four hundred four thousand, five".