13072489 has 4 divisors (see below), whose sum is σ = 13084740. Its totient is φ = 13060240.

The previous prime is 13072457. The next prime is 13072517. The reversal of 13072489 is 98427031.

13072489 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98427031 = 523 ⋅188197.

It can be written as a sum of positive squares in 2 ways, for example, as 6656400 + 6416089 = 2580^2 + 2533^2 .

It is a cyclic number.

It is not a de Polignac number, because 13072489 - 2⁵ = 13072457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13072429) 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 3 ways as a sum of consecutive naturals, for example, 4354 + ... + 6715.

It is an arithmetic number, because the mean of its divisors is an integer number (3271185).

Almost surely, 2^13072489 is an apocalyptic number.

It is an amenable number.

13072489 is a deficient number, since it is larger than the sum of its proper divisors (12251).

13072489 is a wasteful number, since it uses less digits than its factorization.

13072489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12250.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 13072489 is about 3615.5897167682. The cubic root of 13072489 is about 235.5696997246.

The spelling of 13072489 in words is "thirteen million, seventy-two thousand, four hundred eighty-nine".