13543489 has 4 divisors (see below), whose sum is σ = 13873860. Its totient is φ = 13213120.

The previous prime is 13543451. The next prime is 13543499. The reversal of 13543489 is 98434531.

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 705600 + 12837889 = 840^2 + 3583^2 .

It is a cyclic number.

It is not a de Polignac number, because 13543489 - 2¹¹ = 13541441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13543499) 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, 165124 + ... + 165205.

It is an arithmetic number, because the mean of its divisors is an integer number (3468465).

Almost surely, 2^13543489 is an apocalyptic number.

It is an amenable number.

13543489 is a deficient number, since it is larger than the sum of its proper divisors (330371).

13543489 is an equidigital number, since it uses as much as digits as its factorization.

13543489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330370.

The product of its digits is 51840, while the sum is 37.

The square root of 13543489 is about 3680.1479589821. The cubic root of 13543489 is about 238.3655670076.

The spelling of 13543489 in words is "thirteen million, five hundred forty-three thousand, four hundred eighty-nine".