12947389 has 16 divisors (see below), whose sum is σ = 16145920. Its totient is φ = 10108800.

The previous prime is 12947381. The next prime is 12947401. The reversal of 12947389 is 98374921.

12947389 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12947389 - 2³ = 12947381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12947381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6289 + ... + 8089.

It is an arithmetic number, because the mean of its divisors is an integer number (1009120).

Almost surely, 2^12947389 is an apocalyptic number.

It is an amenable number.

12947389 is a deficient number, since it is larger than the sum of its proper divisors (3198531).

12947389 is a wasteful number, since it uses less digits than its factorization.

12947389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900.

The product of its digits is 108864, while the sum is 43.

The square root of 12947389 is about 3598.2480459246. The cubic root of 12947389 is about 234.8158448619.

The spelling of 12947389 in words is "twelve million, nine hundred forty-seven thousand, three hundred eighty-nine".