12907229 has 2 divisors, whose sum is σ = 12907230. Its totient is φ = 12907228.

The previous prime is 12907217. The next prime is 12907231. The reversal of 12907229 is 92270921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10432900 + 2474329 = 3230^2 + 1573^2 .

It is an emirp because it is prime and its reverse (92270921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12907229 - 2¹² = 12903133 is a prime.

Together with 12907231, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12907195 and 12907204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12907259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6453614 + 6453615.

It is an arithmetic number, because the mean of its divisors is an integer number (6453615).

Almost surely, 2^12907229 is an apocalyptic number.

It is an amenable number.

12907229 is a deficient number, since it is larger than the sum of its proper divisors (1).

12907229 is an equidigital number, since it uses as much as digits as its factorization.

12907229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 12907229 is about 3592.6632182825. The cubic root of 12907229 is about 234.5728107563.

The spelling of 12907229 in words is "twelve million, nine hundred seven thousand, two hundred twenty-nine".