12489617 has 4 divisors (see below), whose sum is σ = 14273856. Its totient is φ = 10705380.

The previous prime is 12489613. The next prime is 12489619. The reversal of 12489617 is 71698421.

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, and also an emirpimes, since its reverse is a distinct semiprime: 71698421 = 2467 ⋅29063.

It is not a de Polignac number, because 12489617 - 2² = 12489613 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12489613) 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, 892109 + ... + 892122.

It is an arithmetic number, because the mean of its divisors is an integer number (3568464).

Almost surely, 2^12489617 is an apocalyptic number.

It is an amenable number.

12489617 is a deficient number, since it is larger than the sum of its proper divisors (1784239).

12489617 is an equidigital number, since it uses as much as digits as its factorization.

12489617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784238.

The product of its digits is 24192, while the sum is 38.

The square root of 12489617 is about 3534.0652229409. The cubic root of 12489617 is about 232.0151657248.

The spelling of 12489617 in words is "twelve million, four hundred eighty-nine thousand, six hundred seventeen".