63449679 has 4 divisors (see below), whose sum is σ = 84599576. Its totient is φ = 42299784.

The previous prime is 63449657. The next prime is 63449681. The reversal of 63449679 is 97694436.

63449679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 63449679 - 2⁹ = 63449167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63449689) 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 3 ways as a sum of consecutive naturals, for example, 10574944 + ... + 10574949.

It is an arithmetic number, because the mean of its divisors is an integer number (21149894).

Almost surely, 2^63449679 is an apocalyptic number.

63449679 is a deficient number, since it is larger than the sum of its proper divisors (21149897).

63449679 is a wasteful number, since it uses less digits than its factorization.

63449679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21149896.

The product of its digits is 979776, while the sum is 48.

The square root of 63449679 is about 7965.5306791199. The cubic root of 63449679 is about 398.8501959602.

The spelling of 63449679 in words is "sixty-three million, four hundred forty-nine thousand, six hundred seventy-nine".