12489853 has 4 divisors (see below), whose sum is σ = 12496960. Its totient is φ = 12482748.

The previous prime is 12489809. The next prime is 12489857. The reversal of 12489853 is 35898421.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12489853 - 2¹³ = 12481661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12489857) 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, 1228 + ... + 5146.

It is an arithmetic number, because the mean of its divisors is an integer number (3124240).

Almost surely, 2^12489853 is an apocalyptic number.

It is an amenable number.

12489853 is a deficient number, since it is larger than the sum of its proper divisors (7107).

12489853 is an equidigital number, since it uses as much as digits as its factorization.

12489853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7106.

The product of its digits is 69120, while the sum is 40.

The square root of 12489853 is about 3534.0986120933. The cubic root of 12489853 is about 232.0166270783.

The spelling of 12489853 in words is "twelve million, four hundred eighty-nine thousand, eight hundred fifty-three".