12172907 has 2 divisors, whose sum is σ = 12172908. Its totient is φ = 12172906.

The previous prime is 12172903. The next prime is 12172921. The reversal of 12172907 is 70927121.

12172907 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12172907 - 2² = 12172903 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12172907.

It is not a weakly prime, because it can be changed into another prime (12172903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6086453 + 6086454.

It is an arithmetic number, because the mean of its divisors is an integer number (6086454).

Almost surely, 2^12172907 is an apocalyptic number.

12172907 is a deficient number, since it is larger than the sum of its proper divisors (1).

12172907 is an equidigital number, since it uses as much as digits as its factorization.

12172907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 12172907 is about 3488.9693320521. The cubic root of 12172907 is about 230.0372151501.

The spelling of 12172907 in words is "twelve million, one hundred seventy-two thousand, nine hundred seven".