13509029 has 4 divisors (see below), whose sum is σ = 13519200. Its totient is φ = 13498860.

The previous prime is 13508987. The next prime is 13509031. The reversal of 13509029 is 92090531.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13509029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13508992 and 13509010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13509059) 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 in 3 ways as a sum of consecutive naturals, for example, 2729 + ... + 5870.

It is an arithmetic number, because the mean of its divisors is an integer number (3379800).

Almost surely, 2^13509029 is an apocalyptic number.

It is an amenable number.

13509029 is a deficient number, since it is larger than the sum of its proper divisors (10171).

13509029 is an equidigital number, since it uses as much as digits as its factorization.

13509029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10170.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 13509029 is about 3675.4631000732. The cubic root of 13509029 is about 238.1632298322.

The spelling of 13509029 in words is "thirteen million, five hundred nine thousand, twenty-nine".