13458609 has 8 divisors (see below), whose sum is σ = 19938720. Its totient is φ = 8972388.

The previous prime is 13458589. The next prime is 13458623. The reversal of 13458609 is 90685431.

13458609 is a `hidden beast` number, since 1 + 3 + 45 + 8 + 609 = 666.

It is not a de Polignac number, because 13458609 - 2⁷ = 13458481 is a prime.

It is a super-2 number, since 2×13458609² = 362268312429762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13458649) 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 7 ways as a sum of consecutive naturals, for example, 249207 + ... + 249260.

It is an arithmetic number, because the mean of its divisors is an integer number (2492340).

Almost surely, 2^13458609 is an apocalyptic number.

It is an amenable number.

13458609 is a deficient number, since it is larger than the sum of its proper divisors (6480111).

13458609 is an equidigital number, since it uses as much as digits as its factorization.

13458609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498476 (or 498470 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 13458609 is about 3668.5976884908. The cubic root of 13458609 is about 237.8665600872.

The spelling of 13458609 in words is "thirteen million, four hundred fifty-eight thousand, six hundred nine".