12639086 has 8 divisors (see below), whose sum is σ = 18976224. Its totient is φ = 6313680.

The previous prime is 12639083. The next prime is 12639091. The reversal of 12639086 is 68093621.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12639083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626 + ... + 5066.

It is an arithmetic number, because the mean of its divisors is an integer number (2372028).

Almost surely, 2^12639086 is an apocalyptic number.

12639086 is a deficient number, since it is larger than the sum of its proper divisors (6337138).

12639086 is a wasteful number, since it uses less digits than its factorization.

12639086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5866.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 12639086 is about 3555.1492233098. The cubic root of 12639086 is about 232.9370420627.

The spelling of 12639086 in words is "twelve million, six hundred thirty-nine thousand, eighty-six".