12947489 has 12 divisors (see below), whose sum is σ = 13969728. Its totient is φ = 11995200.

The previous prime is 12947483. The next prime is 12947497. The reversal of 12947489 is 98474921.

It is not a de Polignac number, because 12947489 - 2¹² = 12943393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12947483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20204 + ... + 20834.

It is an arithmetic number, because the mean of its divisors is an integer number (1164144).

Almost surely, 2^12947489 is an apocalyptic number.

It is an amenable number.

12947489 is a deficient number, since it is larger than the sum of its proper divisors (1022239).

12947489 is an equidigital number, since it uses as much as digits as its factorization.

12947489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 719 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 12947489 is about 3598.2619415490. The cubic root of 12947489 is about 234.8164493988.

The spelling of 12947489 in words is "twelve million, nine hundred forty-seven thousand, four hundred eighty-nine".