12929137 has 4 divisors (see below), whose sum is σ = 13923700. Its totient is φ = 11934576.

The previous prime is 12929117. The next prime is 12929141. The reversal of 12929137 is 73192921.

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 2405601 + 10523536 = 1551^2 + 3244^2 .

It is a cyclic number.

It is not a de Polignac number, because 12929137 - 2⁷ = 12929009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12929117) 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, 497262 + ... + 497287.

It is an arithmetic number, because the mean of its divisors is an integer number (3480925).

Almost surely, 2^12929137 is an apocalyptic number.

It is an amenable number.

12929137 is a deficient number, since it is larger than the sum of its proper divisors (994563).

12929137 is an equidigital number, since it uses as much as digits as its factorization.

12929137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994562.

The product of its digits is 6804, while the sum is 34.

The square root of 12929137 is about 3595.7109171901. The cubic root of 12929137 is about 234.7054526093.

The spelling of 12929137 in words is "twelve million, nine hundred twenty-nine thousand, one hundred thirty-seven".