12971089 has 4 divisors (see below), whose sum is σ = 13135360. Its totient is φ = 12806820.

The previous prime is 12971087. The next prime is 12971093. The reversal of 12971089 is 98017921.

12971089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12971089 - 2¹ = 12971087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12971083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82017 + ... + 82174.

It is an arithmetic number, because the mean of its divisors is an integer number (3283840).

Almost surely, 2^12971089 is an apocalyptic number.

It is an amenable number.

12971089 is a deficient number, since it is larger than the sum of its proper divisors (164271).

12971089 is an equidigital number, since it uses as much as digits as its factorization.

12971089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164270.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 12971089 is about 3601.5398095815. The cubic root of 12971089 is about 234.9590331485.

The spelling of 12971089 in words is "twelve million, nine hundred seventy-one thousand, eighty-nine".