13199609 has 2 divisors, whose sum is σ = 13199610. Its totient is φ = 13199608.

The previous prime is 13199551. The next prime is 13199617. The reversal of 13199609 is 90699131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7182400 + 6017209 = 2680^2 + 2453^2 .

It is a cyclic number.

It is not a de Polignac number, because 13199609 - 2¹² = 13195513 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13199629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6599804 + 6599805.

It is an arithmetic number, because the mean of its divisors is an integer number (6599805).

Almost surely, 2^13199609 is an apocalyptic number.

It is an amenable number.

13199609 is a deficient number, since it is larger than the sum of its proper divisors (1).

13199609 is an equidigital number, since it uses as much as digits as its factorization.

13199609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13122, while the sum is 38.

The square root of 13199609 is about 3633.1266149145. The cubic root of 13199609 is about 236.3308165790.

The spelling of 13199609 in words is "thirteen million, one hundred ninety-nine thousand, six hundred nine".