12739456 has 16 divisors (see below), whose sum is σ = 25379640. Its totient is φ = 6369664.

The previous prime is 12739429. The next prime is 12739471. The reversal of 12739456 is 65493721.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49636 + ... + 49891.

Almost surely, 2^12739456 is an apocalyptic number.

12739456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12739456 is a deficient number, since it is larger than the sum of its proper divisors (12640184).

12739456 is an frugal number, since it uses more digits than its factorization.

12739456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99541 (or 99529 counting only the distinct ones).

The product of its digits is 45360, while the sum is 37.

The square root of 12739456 is about 3569.2374535746. The cubic root of 12739456 is about 233.5520199200.

The spelling of 12739456 in words is "twelve million, seven hundred thirty-nine thousand, four hundred fifty-six".