12404539 has 4 divisors (see below), whose sum is σ = 14176624. Its totient is φ = 10632456.

The previous prime is 12404537. The next prime is 12404563. The reversal of 12404539 is 93540421.

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 12404539 - 2¹ = 12404537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12404531) 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, 886032 + ... + 886045.

It is an arithmetic number, because the mean of its divisors is an integer number (3544156).

Almost surely, 2^12404539 is an apocalyptic number.

12404539 is a deficient number, since it is larger than the sum of its proper divisors (1772085).

12404539 is an equidigital number, since it uses as much as digits as its factorization.

12404539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772084.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 12404539 is about 3522.0078080549. The cubic root of 12404539 is about 231.4871437270.

The spelling of 12404539 in words is "twelve million, four hundred four thousand, five hundred thirty-nine".