12937289 has 8 divisors (see below), whose sum is σ = 13747968. Its totient is φ = 12132160.

The previous prime is 12937273. The next prime is 12937333. The reversal of 12937289 is 98273921.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12937289 - 2⁴ = 12937273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12937259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4064 + ... + 6510.

It is an arithmetic number, because the mean of its divisors is an integer number (1718496).

Almost surely, 2^12937289 is an apocalyptic number.

It is an amenable number.

12937289 is a deficient number, since it is larger than the sum of its proper divisors (810679).

12937289 is a wasteful number, since it uses less digits than its factorization.

12937289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775.

The product of its digits is 54432, while the sum is 41.

The square root of 12937289 is about 3596.8443113374. The cubic root of 12937289 is about 234.7547705920.

The spelling of 12937289 in words is "twelve million, nine hundred thirty-seven thousand, two hundred eighty-nine".