12939747 has 8 divisors (see below), whose sum is σ = 17536080. Its totient is φ = 8484960.

The previous prime is 12939739. The next prime is 12939749. The reversal of 12939747 is 74793921.

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

It is not a de Polignac number, because 12939747 - 2³ = 12939739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12939699 and 12939708.

It is not an unprimeable number, because it can be changed into a prime (12939749) 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 7 ways as a sum of consecutive naturals, for example, 35172 + ... + 35537.

It is an arithmetic number, because the mean of its divisors is an integer number (2192010).

Almost surely, 2^12939747 is an apocalyptic number.

12939747 is a deficient number, since it is larger than the sum of its proper divisors (4596333).

12939747 is an equidigital number, since it uses as much as digits as its factorization.

12939747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70773.

The product of its digits is 95256, while the sum is 42.

The square root of 12939747 is about 3597.1859835154. The cubic root of 12939747 is about 234.7696369391.

The spelling of 12939747 in words is "twelve million, nine hundred thirty-nine thousand, seven hundred forty-seven".