12639046 has 8 divisors (see below), whose sum is σ = 21666960. Its totient is φ = 5416728.

The previous prime is 12639031. The next prime is 12639071. The reversal of 12639046 is 64093621.

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

It is a junction number, because it is equal to n+sod(n) for n = 12638999 and 12639017.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 451381 + ... + 451408.

It is an arithmetic number, because the mean of its divisors is an integer number (2708370).

Almost surely, 2^12639046 is an apocalyptic number.

12639046 is a deficient number, since it is larger than the sum of its proper divisors (9027914).

12639046 is an equidigital number, since it uses as much as digits as its factorization.

12639046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902798.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 12639046 is about 3555.1435976624. The cubic root of 12639046 is about 232.9367963305.

The spelling of 12639046 in words is "twelve million, six hundred thirty-nine thousand, forty-six".