12663139 has 8 divisors (see below), whose sum is σ = 13690640. Its totient is φ = 11671776.

The previous prime is 12663127. The next prime is 12663143. The reversal of 12663139 is 93136621.

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

It is not a de Polignac number, because 12663139 - 2⁵ = 12663107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12663139.

It is not an unprimeable number, because it can be changed into a prime (12663239) 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, 8304 + ... + 9709.

It is an arithmetic number, because the mean of its divisors is an integer number (1711330).

Almost surely, 2^12663139 is an apocalyptic number.

12663139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12663139 is a deficient number, since it is larger than the sum of its proper divisors (1027501).

12663139 is a wasteful number, since it uses less digits than its factorization.

12663139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18069.

The product of its digits is 5832, while the sum is 31.

The square root of 12663139 is about 3558.5304551177. The cubic root of 12663139 is about 233.0847131902.

The spelling of 12663139 in words is "twelve million, six hundred sixty-three thousand, one hundred thirty-nine".