12909461 has 2 divisors, whose sum is σ = 12909462. Its totient is φ = 12909460.

The previous prime is 12909451. The next prime is 12909467. The reversal of 12909461 is 16490921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12117361 + 792100 = 3481^2 + 890^2 .

It is an emirp because it is prime and its reverse (16490921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12909461 - 2⁶ = 12909397 is a prime.

It is equal to p₈₄₃₇₅₅ and since 12909461 and 843755 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12909467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6454730 + 6454731.

It is an arithmetic number, because the mean of its divisors is an integer number (6454731).

Almost surely, 2^12909461 is an apocalyptic number.

It is an amenable number.

12909461 is a deficient number, since it is larger than the sum of its proper divisors (1).

12909461 is an equidigital number, since it uses as much as digits as its factorization.

12909461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 12909461 is about 3592.9738379231. The cubic root of 12909461 is about 234.5863312503.

The spelling of 12909461 in words is "twelve million, nine hundred nine thousand, four hundred sixty-one".