12989737 has 4 divisors (see below), whose sum is σ = 13001476. Its totient is φ = 12978000.

The previous prime is 12989729. The next prime is 12989747. The reversal of 12989737 is 73798921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6859161 + 6130576 = 2619^2 + 2476^2 .

It is a cyclic number.

It is not a de Polignac number, because 12989737 - 2³ = 12989729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12989747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4014 + ... + 6487.

It is an arithmetic number, because the mean of its divisors is an integer number (3250369).

Almost surely, 2^12989737 is an apocalyptic number.

It is an amenable number.

12989737 is a deficient number, since it is larger than the sum of its proper divisors (11739).

12989737 is a wasteful number, since it uses less digits than its factorization.

12989737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11738.

The product of its digits is 190512, while the sum is 46.

The square root of 12989737 is about 3604.1277724298. The cubic root of 12989737 is about 235.0715762053.

The spelling of 12989737 in words is "twelve million, nine hundred eighty-nine thousand, seven hundred thirty-seven".