13437289 has 4 divisors (see below), whose sum is σ = 13468756. Its totient is φ = 13405824.

The previous prime is 13437271. The next prime is 13437317. The reversal of 13437289 is 98273431.

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 4928400 + 8508889 = 2220^2 + 2917^2 .

It is a cyclic number.

It is not a de Polignac number, because 13437289 - 2²¹ = 11340137 is a prime.

It is a cake number, because a cake can be divided into 13437289 parts by 432 planar cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13437209) 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, 15084 + ... + 15949.

It is an arithmetic number, because the mean of its divisors is an integer number (3367189).

Almost surely, 2^13437289 is an apocalyptic number.

It is an amenable number.

13437289 is a deficient number, since it is larger than the sum of its proper divisors (31467).

13437289 is an equidigital number, since it uses as much as digits as its factorization.

13437289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31466.

The product of its digits is 36288, while the sum is 37.

The square root of 13437289 is about 3665.6907943797. The cubic root of 13437289 is about 237.7408909518.

The spelling of 13437289 in words is "thirteen million, four hundred thirty-seven thousand, two hundred eighty-nine".