13447449 has 6 divisors (see below), whose sum is σ = 19424106. Its totient is φ = 8964960.

The previous prime is 13447409. The next prime is 13447477. The reversal of 13447449 is 94474431.

It can be written as a sum of positive squares in only one way, i.e., 12531600 + 915849 = 3540^2 + 957^2 .

It is not a de Polignac number, because 13447449 - 2⁷ = 13447321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13447409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 747072 + ... + 747089.

It is an arithmetic number, because the mean of its divisors is an integer number (3237351).

Almost surely, 2^13447449 is an apocalyptic number.

It is an amenable number.

13447449 is a deficient number, since it is larger than the sum of its proper divisors (5976657).

13447449 is a wasteful number, since it uses less digits than its factorization.

13447449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494167 (or 1494164 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 13447449 is about 3667.0763558999. The cubic root of 13447449 is about 237.8007948737.

The spelling of 13447449 in words is "thirteen million, four hundred forty-seven thousand, four hundred forty-nine".