12909937 has 2 divisors, whose sum is σ = 12909938. Its totient is φ = 12909936.

The previous prime is 12909907. The next prime is 12909961. The reversal of 12909937 is 73990921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7485696 + 5424241 = 2736^2 + 2329^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12909937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12909937.

It is not a weakly prime, because it can be changed into another prime (12909907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6454968 + 6454969.

It is an arithmetic number, because the mean of its divisors is an integer number (6454969).

Almost surely, 2^12909937 is an apocalyptic number.

It is an amenable number.

12909937 is a deficient number, since it is larger than the sum of its proper divisors (1).

12909937 is an equidigital number, since it uses as much as digits as its factorization.

12909937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 12909937 is about 3593.0400777058. The cubic root of 12909937 is about 234.5892144515.

The spelling of 12909937 in words is "twelve million, nine hundred nine thousand, nine hundred thirty-seven".