13447669 has 2 divisors, whose sum is σ = 13447670. Its totient is φ = 13447668.

The previous prime is 13447667. The next prime is 13447673. The reversal of 13447669 is 96674431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8439025 + 5008644 = 2905^2 + 2238^2 .

It is a cyclic number.

It is not a de Polignac number, because 13447669 - 2¹ = 13447667 is a prime.

It is a super-2 number, since 2×13447669² = 361679603067122, which contains 22 as substring.

Together with 13447667, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13447667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6723834 + 6723835.

It is an arithmetic number, because the mean of its divisors is an integer number (6723835).

Almost surely, 2^13447669 is an apocalyptic number.

It is an amenable number.

13447669 is a deficient number, since it is larger than the sum of its proper divisors (1).

13447669 is an equidigital number, since it uses as much as digits as its factorization.

13447669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The square root of 13447669 is about 3667.1063524256. The cubic root of 13447669 is about 237.8020916720.

The spelling of 13447669 in words is "thirteen million, four hundred forty-seven thousand, six hundred sixty-nine".