12539493 has 12 divisors (see below), whose sum is σ = 18234528. Its totient is φ = 8303400.

The previous prime is 12539479. The next prime is 12539503. The reversal of 12539493 is 39493521.

It is a happy number.

It is not a de Polignac number, because 12539493 - 2¹³ = 12531301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12539893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3255 + ... + 5972.

It is an arithmetic number, because the mean of its divisors is an integer number (1519544).

Almost surely, 2^12539493 is an apocalyptic number.

It is an amenable number.

12539493 is a deficient number, since it is larger than the sum of its proper divisors (5695035).

12539493 is a wasteful number, since it uses less digits than its factorization.

12539493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9384 (or 9381 counting only the distinct ones).

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

The square root of 12539493 is about 3541.1146550204. The cubic root of 12539493 is about 232.3235984184.

The spelling of 12539493 in words is "twelve million, five hundred thirty-nine thousand, four hundred ninety-three".