13609457 has 4 divisors (see below), whose sum is σ = 13926000. Its totient is φ = 13292916.

The previous prime is 13609433. The next prime is 13609481. The reversal of 13609457 is 75490631.

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 an interprime number because it is at equal distance from previous prime (13609433) and next prime (13609481).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13609457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13609487) 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, 158207 + ... + 158292.

It is an arithmetic number, because the mean of its divisors is an integer number (3481500).

Almost surely, 2^13609457 is an apocalyptic number.

It is an amenable number.

13609457 is a deficient number, since it is larger than the sum of its proper divisors (316543).

13609457 is an equidigital number, since it uses as much as digits as its factorization.

13609457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316542.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 13609457 is about 3689.0997546827. The cubic root of 13609457 is about 238.7519528727.

The spelling of 13609457 in words is "thirteen million, six hundred nine thousand, four hundred fifty-seven".