13408481 has 2 divisors, whose sum is σ = 13408482. Its totient is φ = 13408480.

The previous prime is 13408463. The next prime is 13408501. The reversal of 13408481 is 18480431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12390400 + 1018081 = 3520^2 + 1009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13408481 is a prime.

It is a super-2 number, since 2×13408481² = 359574725454722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13408081) 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 as a sum of consecutive naturals, namely, 6704240 + 6704241.

It is an arithmetic number, because the mean of its divisors is an integer number (6704241).

Almost surely, 2^13408481 is an apocalyptic number.

It is an amenable number.

13408481 is a deficient number, since it is larger than the sum of its proper divisors (1).

13408481 is an equidigital number, since it uses as much as digits as its factorization.

13408481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 13408481 is about 3661.7592766319. The cubic root of 13408481 is about 237.5708730313.

The spelling of 13408481 in words is "thirteen million, four hundred eight thousand, four hundred eighty-one".