12956489 has 16 divisors (see below), whose sum is σ = 16058112. Its totient is φ = 10179648.

The previous prime is 12956477. The next prime is 12956491. The reversal of 12956489 is 98465921.

12956489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12956489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12956389) 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, 15332 + ... + 16154.

It is an arithmetic number, because the mean of its divisors is an integer number (1003632).

Almost surely, 2^12956489 is an apocalyptic number.

It is an amenable number.

12956489 is a deficient number, since it is larger than the sum of its proper divisors (3101623).

12956489 is a wasteful number, since it uses less digits than its factorization.

12956489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016.

The product of its digits is 155520, while the sum is 44.

The square root of 12956489 is about 3599.5123280800. The cubic root of 12956489 is about 234.8708449798.

The spelling of 12956489 in words is "twelve million, nine hundred fifty-six thousand, four hundred eighty-nine".