63905849 has 12 divisors (see below), whose sum is σ = 76739328. Its totient is φ = 53008200.

The previous prime is 63905837. The next prime is 63905867. The reversal of 63905849 is 94850936.

63905849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63905849 - 2⁴ = 63905833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63905899) 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 in 11 ways as a sum of consecutive naturals, for example, 19517 + ... + 22554.

It is an arithmetic number, because the mean of its divisors is an integer number (6394944).

Almost surely, 2^63905849 is an apocalyptic number.

It is an amenable number.

63905849 is a deficient number, since it is larger than the sum of its proper divisors (12833479).

63905849 is a wasteful number, since it uses less digits than its factorization.

63905849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42116 (or 42109 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 63905849 is about 7994.1133967439. The cubic root of 63905849 is about 399.8037558196.

The spelling of 63905849 in words is "sixty-three million, nine hundred five thousand, eight hundred forty-nine".