12409853 has 4 divisors (see below), whose sum is σ = 12422208. Its totient is φ = 12397500.

The previous prime is 12409849. The next prime is 12409879. The reversal of 12409853 is 35890421.

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: 35890421 = 7 ⋅5127203.

It is a cyclic number.

It is not a de Polignac number, because 12409853 - 2² = 12409849 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 (12409153) 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, 4523 + ... + 6728.

It is an arithmetic number, because the mean of its divisors is an integer number (3105552).

Almost surely, 2^12409853 is an apocalyptic number.

It is an amenable number.

12409853 is a deficient number, since it is larger than the sum of its proper divisors (12355).

12409853 is a wasteful number, since it uses less digits than its factorization.

12409853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12354.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 12409853 is about 3522.7621265138. The cubic root of 12409853 is about 231.5201947219.

The spelling of 12409853 in words is "twelve million, four hundred nine thousand, eight hundred fifty-three".