12394539 has 20 divisors (see below), whose sum is σ = 19323216. Its totient is φ = 7902576.

The previous prime is 12394483. The next prime is 12394549. The reversal of 12394539 is 93549321.

It is a happy number.

It is not a de Polignac number, because 12394539 - 2⁹ = 12394027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12394549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1464 + ... + 5189.

Almost surely, 2^12394539 is an apocalyptic number.

12394539 is a deficient number, since it is larger than the sum of its proper divisors (6928677).

12394539 is an equidigital number, since it uses as much as digits as its factorization.

12394539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6688 (or 6679 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 12394539 is about 3520.5878770455. The cubic root of 12394539 is about 231.4249220471.

It can be divided in two parts, 1239 and 4539, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 12394539 in words is "twelve million, three hundred ninety-four thousand, five hundred thirty-nine".