13408669 has 2 divisors, whose sum is σ = 13408670. Its totient is φ = 13408668.

The previous prime is 13408639. The next prime is 13408679. The reversal of 13408669 is 96680431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10725625 + 2683044 = 3275^2 + 1638^2 .

It is a cyclic number.

It is not a de Polignac number, because 13408669 - 2²³ = 5020061 is a prime.

It is a super-2 number, since 2×13408669² = 359584808703122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13408639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6704334 + 6704335.

It is an arithmetic number, because the mean of its divisors is an integer number (6704335).

Almost surely, 2^13408669 is an apocalyptic number.

It is an amenable number.

13408669 is a deficient number, since it is larger than the sum of its proper divisors (1).

13408669 is an equidigital number, since it uses as much as digits as its factorization.

13408669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 13408669 is about 3661.7849472627. The cubic root of 13408669 is about 237.5719833513.

The spelling of 13408669 in words is "thirteen million, four hundred eight thousand, six hundred sixty-nine".