12639416 has 16 divisors (see below), whose sum is σ = 24053640. Its totient is φ = 6225120.

The previous prime is 12639379. The next prime is 12639433. The reversal of 12639416 is 61493621.

It is a super-3 number, since 3×12639416³ (a number of 22 digits) contains 333 as substring.

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, 11255 + ... + 12326.

Almost surely, 2^12639416 is an apocalyptic number.

It is an amenable number.

12639416 is a deficient number, since it is larger than the sum of its proper divisors (11414224).

12639416 is a wasteful number, since it uses less digits than its factorization.

12639416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23654 (or 23650 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 12639416 is about 3555.1956345608. The cubic root of 12639416 is about 232.9390693336.

The spelling of 12639416 in words is "twelve million, six hundred thirty-nine thousand, four hundred sixteen".