12549439 has 12 divisors (see below), whose sum is σ = 14685024. Its totient is φ = 10692864.

The previous prime is 12549419. The next prime is 12549457. The reversal of 12549439 is 93494521.

It is not a de Polignac number, because 12549439 - 2¹³ = 12541247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12549398 and 12549407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12549419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8794 + ... + 10120.

It is an arithmetic number, because the mean of its divisors is an integer number (1223752).

Almost surely, 2^12549439 is an apocalyptic number.

12549439 is a deficient number, since it is larger than the sum of its proper divisors (2135585).

12549439 is a wasteful number, since it uses less digits than its factorization.

12549439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534 (or 1527 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 12549439 is about 3542.5187367183. The cubic root of 12549439 is about 232.3850065326.

The spelling of 12549439 in words is "twelve million, five hundred forty-nine thousand, four hundred thirty-nine".