12453839 has 4 divisors (see below), whose sum is σ = 12501456. Its totient is φ = 12406224.

The previous prime is 12453829. The next prime is 12453851. The reversal of 12453839 is 93835421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12453839 - 2⁴ = 12453823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12453799 and 12453808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12453829) 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, 23414 + ... + 23939.

It is an arithmetic number, because the mean of its divisors is an integer number (3125364).

Almost surely, 2^12453839 is an apocalyptic number.

12453839 is a deficient number, since it is larger than the sum of its proper divisors (47617).

12453839 is an equidigital number, since it uses as much as digits as its factorization.

12453839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47616.

The product of its digits is 25920, while the sum is 35.

The square root of 12453839 is about 3528.9997166336. Note that the first 3 decimals coincide. The cubic root of 12453839 is about 231.7934087866.

The spelling of 12453839 in words is "twelve million, four hundred fifty-three thousand, eight hundred thirty-nine".