63989449 has 2 divisors, whose sum is σ = 63989450. Its totient is φ = 63989448.

The previous prime is 63989441. The next prime is 63989467. The reversal of 63989449 is 94498936.

63989449 is digitally balanced in base 2, 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., 62299449 + 1690000 = 7893^2 + 1300^2 .

It is a cyclic number.

It is not a de Polignac number, because 63989449 - 2³ = 63989441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63989396 and 63989405.

It is not a weakly prime, because it can be changed into another prime (63989441) 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, 31994724 + 31994725.

It is an arithmetic number, because the mean of its divisors is an integer number (31994725).

Almost surely, 2^63989449 is an apocalyptic number.

It is an amenable number.

63989449 is a deficient number, since it is larger than the sum of its proper divisors (1).

63989449 is an equidigital number, since it uses as much as digits as its factorization.

63989449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 52.

The square root of 63989449 is about 7999.3405353191. The cubic root of 63989449 is about 399.9780175420.

The spelling of 63989449 in words is "sixty-three million, nine hundred eighty-nine thousand, four hundred forty-nine".