13735509 has 4 divisors (see below), whose sum is σ = 18314016. Its totient is φ = 9157004.

The previous prime is 13735471. The next prime is 13735523. The reversal of 13735509 is 90553731.

13735509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13735509 - 2¹⁶ = 13669973 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13735509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13735559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2289249 + ... + 2289254.

It is an arithmetic number, because the mean of its divisors is an integer number (4578504).

Almost surely, 2^13735509 is an apocalyptic number.

It is an amenable number.

13735509 is a deficient number, since it is larger than the sum of its proper divisors (4578507).

13735509 is an equidigital number, since it uses as much as digits as its factorization.

13735509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4578506.

The product of its (nonzero) digits is 14175, while the sum is 33.

The square root of 13735509 is about 3706.1447624182. The cubic root of 13735509 is about 239.4868027066.

The spelling of 13735509 in words is "thirteen million, seven hundred thirty-five thousand, five hundred nine".