3647447449 has 2 divisors, whose sum is σ = 3647447450. Its totient is φ = 3647447448.

The previous prime is 3647447443. The next prime is 3647447471. The reversal of 3647447449 is 9447447463.

3647447449 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2526871824 + 1120575625 = 50268^2 + 33475^2 .

It is a cyclic number.

It is not a de Polignac number, because 3647447449 - 2⁹ = 3647446937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3647447396 and 3647447405.

It is not a weakly prime, because it can be changed into another prime (3647447443) 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, 1823723724 + 1823723725.

It is an arithmetic number, because the mean of its divisors is an integer number (1823723725).

Almost surely, 2^3647447449 is an apocalyptic number.

It is an amenable number.

3647447449 is a deficient number, since it is larger than the sum of its proper divisors (1).

3647447449 is an equidigital number, since it uses as much as digits as its factorization.

3647447449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8128512, while the sum is 52.

The square root of 3647447449 is about 60394.1011109529. The cubic root of 3647447449 is about 1539.3227258835.

The spelling of 3647447449 in words is "three billion, six hundred forty-seven million, four hundred forty-seven thousand, four hundred forty-nine".