12639529 has 8 divisors (see below), whose sum is σ = 14475968. Its totient is φ = 10810800.

The previous prime is 12639527. The next prime is 12639547. The reversal of 12639529 is 92593621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12639529 - 2¹ = 12639527 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12639527) 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 7 ways as a sum of consecutive naturals, for example, 2179 + ... + 5479.

It is an arithmetic number, because the mean of its divisors is an integer number (1809496).

Almost surely, 2^12639529 is an apocalyptic number.

It is an amenable number.

12639529 is a deficient number, since it is larger than the sum of its proper divisors (1836439).

12639529 is an equidigital number, since it uses as much as digits as its factorization.

12639529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3855.

The product of its digits is 29160, while the sum is 37.

The square root of 12639529 is about 3555.2115267590. The cubic root of 12639529 is about 232.9397635122.

The spelling of 12639529 in words is "twelve million, six hundred thirty-nine thousand, five hundred twenty-nine".