13609847 has 2 divisors, whose sum is σ = 13609848. Its totient is φ = 13609846.

The previous prime is 13609831. The next prime is 13609853. The reversal of 13609847 is 74890631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13609847 - 2⁴ = 13609831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13609847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13609147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6804923 + 6804924.

It is an arithmetic number, because the mean of its divisors is an integer number (6804924).

Almost surely, 2^13609847 is an apocalyptic number.

13609847 is a deficient number, since it is larger than the sum of its proper divisors (1).

13609847 is an equidigital number, since it uses as much as digits as its factorization.

13609847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 13609847 is about 3689.1526127283. The cubic root of 13609847 is about 238.7542334529.

The spelling of 13609847 in words is "thirteen million, six hundred nine thousand, eight hundred forty-seven".