12613409 has 2 divisors, whose sum is σ = 12613410. Its totient is φ = 12613408.

The previous prime is 12613387. The next prime is 12613457. The reversal of 12613409 is 90431621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12229009 + 384400 = 3497^2 + 620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12613409 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12613459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6306704 + 6306705.

It is an arithmetic number, because the mean of its divisors is an integer number (6306705).

Almost surely, 2^12613409 is an apocalyptic number.

It is an amenable number.

12613409 is a deficient number, since it is larger than the sum of its proper divisors (1).

12613409 is an equidigital number, since it uses as much as digits as its factorization.

12613409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 12613409 is about 3551.5361465146. The cubic root of 12613409 is about 232.7791936409.

The spelling of 12613409 in words is "twelve million, six hundred thirteen thousand, four hundred nine".