13615489 has 4 divisors (see below), whose sum is σ = 13846320. Its totient is φ = 13384660.

The previous prime is 13615451. The next prime is 13615493. The reversal of 13615489 is 98451631.

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 a cyclic number.

It is not a de Polignac number, because 13615489 - 2⁷ = 13615361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13615409) 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, 115327 + ... + 115444.

It is an arithmetic number, because the mean of its divisors is an integer number (3461580).

Almost surely, 2^13615489 is an apocalyptic number.

It is an amenable number.

13615489 is a deficient number, since it is larger than the sum of its proper divisors (230831).

13615489 is an equidigital number, since it uses as much as digits as its factorization.

13615489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230830.

The product of its digits is 25920, while the sum is 37.

The square root of 13615489 is about 3689.9172077433. The cubic root of 13615489 is about 238.7872209726.

It can be divided in two parts, 136 and 15489, that added together give a 6-th power (15625 = 5⁶).

The spelling of 13615489 in words is "thirteen million, six hundred fifteen thousand, four hundred eighty-nine".