13408397 has 2 divisors, whose sum is σ = 13408398. Its totient is φ = 13408396.

The previous prime is 13408331. The next prime is 13408463. The reversal of 13408397 is 79380431.

It is a balanced prime because it is at equal distance from previous prime (13408331) and next prime (13408463).

It can be written as a sum of positive squares in only one way, i.e., 13402921 + 5476 = 3661^2 + 74^2 .

It is a cyclic number.

It is not a de Polignac number, because 13408397 - 2⁸ = 13408141 is a prime.

It is a super-2 number, since 2×13408397² = 359570220219218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13408897) 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, 6704198 + 6704199.

It is an arithmetic number, because the mean of its divisors is an integer number (6704199).

Almost surely, 2^13408397 is an apocalyptic number.

It is an amenable number.

13408397 is a deficient number, since it is larger than the sum of its proper divisors (1).

13408397 is an equidigital number, since it uses as much as digits as its factorization.

13408397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 13408397 is about 3661.7478067174. The cubic root of 13408397 is about 237.5703769275.

The spelling of 13408397 in words is "thirteen million, four hundred eight thousand, three hundred ninety-seven".