13735409 has 4 divisors (see below), whose sum is σ = 13786740. Its totient is φ = 13684080.

The previous prime is 13735391. The next prime is 13735411. The reversal of 13735409 is 90453731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90453731 = 317 ⋅285343.

It can be written as a sum of positive squares in 2 ways, for example, as 485809 + 13249600 = 697^2 + 3640^2 .

It is a cyclic number.

It is not a de Polignac number, because 13735409 - 2¹² = 13731313 is a prime.

It is a super-2 number, since 2×13735409² = 377322920794562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13735429) 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 in 3 ways as a sum of consecutive naturals, for example, 25262 + ... + 25799.

It is an arithmetic number, because the mean of its divisors is an integer number (3446685).

Almost surely, 2^13735409 is an apocalyptic number.

It is an amenable number.

13735409 is a deficient number, since it is larger than the sum of its proper divisors (51331).

13735409 is an equidigital number, since it uses as much as digits as its factorization.

13735409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51330.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 13735409 is about 3706.1312712855. The cubic root of 13735409 is about 239.4862215187.

The spelling of 13735409 in words is "thirteen million, seven hundred thirty-five thousand, four hundred nine".