13617389 has 4 divisors (see below), whose sum is σ = 13716924. Its totient is φ = 13517856.

The previous prime is 13617379. The next prime is 13617407. The reversal of 13617389 is 98371631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7155625 + 6461764 = 2675^2 + 2542^2 .

It is a cyclic number.

It is not a de Polignac number, because 13617389 - 2⁸ = 13617133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13617379) 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, 49562 + ... + 49835.

It is an arithmetic number, because the mean of its divisors is an integer number (3429231).

Almost surely, 2^13617389 is an apocalyptic number.

It is an amenable number.

13617389 is a deficient number, since it is larger than the sum of its proper divisors (99535).

13617389 is an equidigital number, since it uses as much as digits as its factorization.

13617389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99534.

The product of its digits is 27216, while the sum is 38.

The square root of 13617389 is about 3690.1746571131. The cubic root of 13617389 is about 238.7983277989.

The spelling of 13617389 in words is "thirteen million, six hundred seventeen thousand, three hundred eighty-nine".