13487009 has 4 divisors (see below), whose sum is σ = 13543680. Its totient is φ = 13430340.

The previous prime is 13486999. The next prime is 13487021. The reversal of 13487009 is 90078431.

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 a de Polignac number, because none of the positive numbers 2^k-13487009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13487609) 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, 27977 + ... + 28454.

It is an arithmetic number, because the mean of its divisors is an integer number (3385920).

Almost surely, 2^13487009 is an apocalyptic number.

It is an amenable number.

13487009 is a deficient number, since it is larger than the sum of its proper divisors (56671).

13487009 is an equidigital number, since it uses as much as digits as its factorization.

13487009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56670.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 13487009 is about 3672.4663374904. The cubic root of 13487009 is about 238.0337557752.

The spelling of 13487009 in words is "thirteen million, four hundred eighty-seven thousand, nine".