13409369 has 2 divisors, whose sum is σ = 13409370. Its totient is φ = 13409368.

The previous prime is 13409359. The next prime is 13409401. The reversal of 13409369 is 96390431.

13409369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12166144 + 1243225 = 3488^2 + 1115^2 .

It is a cyclic number.

It is not a de Polignac number, because 13409369 - 2⁴ = 13409353 is a prime.

It is a super-2 number, since 2×13409369² = 359622353956322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13409309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6704684 + 6704685.

It is an arithmetic number, because the mean of its divisors is an integer number (6704685).

Almost surely, 2^13409369 is an apocalyptic number.

It is an amenable number.

13409369 is a deficient number, since it is larger than the sum of its proper divisors (1).

13409369 is an equidigital number, since it uses as much as digits as its factorization.

13409369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 13409369 is about 3661.8805278163. The cubic root of 13409369 is about 237.5761174304.

The spelling of 13409369 in words is "thirteen million, four hundred nine thousand, three hundred sixty-nine".