13408453 has 4 divisors (see below), whose sum is σ = 13424620. Its totient is φ = 13392288.

The previous prime is 13408397. The next prime is 13408463. The reversal of 13408453 is 35480431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35480431 = 7 ⋅5068633.

It can be written as a sum of positive squares in 2 ways, for example, as 9941409 + 3467044 = 3153^2 + 1862^2 .

It is a cyclic number.

It is not a de Polignac number, because 13408453 - 2⁹ = 13407941 is a prime.

It is a super-2 number, since 2×13408453² = 359573223706418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13408463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6768 + ... + 8521.

It is an arithmetic number, because the mean of its divisors is an integer number (3356155).

Almost surely, 2^13408453 is an apocalyptic number.

It is an amenable number.

13408453 is a deficient number, since it is larger than the sum of its proper divisors (16167).

13408453 is an equidigital number, since it uses as much as digits as its factorization.

13408453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16166.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 13408453 is about 3661.7554533311. The cubic root of 13408453 is about 237.5707076636.

Adding to 13408453 its reverse (35480431), we get a palindrome (48888884).

It can be divided in two parts, 13408 and 453, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 13408453 in words is "thirteen million, four hundred eight thousand, four hundred fifty-three".