12529649 has 4 divisors (see below), whose sum is σ = 13668720. Its totient is φ = 11390580.

The previous prime is 12529639. The next prime is 12529667. The reversal of 12529649 is 94692521.

12529649 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 12529649 - 2⁴ = 12529633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12529619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569519 + ... + 569540.

It is an arithmetic number, because the mean of its divisors is an integer number (3417180).

Almost surely, 2^12529649 is an apocalyptic number.

It is an amenable number.

12529649 is a deficient number, since it is larger than the sum of its proper divisors (1139071).

12529649 is a wasteful number, since it uses less digits than its factorization.

12529649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139070.

The product of its digits is 38880, while the sum is 38.

The square root of 12529649 is about 3539.7244243020. The cubic root of 12529649 is about 232.2627880857.

It can be divided in two parts, 1252 and 9649, that added together give a palindrome (10901).

The spelling of 12529649 in words is "twelve million, five hundred twenty-nine thousand, six hundred forty-nine".