63438847 has 4 divisors (see below), whose sum is σ = 63540016. Its totient is φ = 63337680.

The previous prime is 63438839. The next prime is 63438877. The reversal of 63438847 is 74883436.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 63438847 - 2³ = 63438839 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63438877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49638 + ... + 50899.

It is an arithmetic number, because the mean of its divisors is an integer number (15885004).

Almost surely, 2^63438847 is an apocalyptic number.

63438847 is a deficient number, since it is larger than the sum of its proper divisors (101169).

63438847 is a wasteful number, since it uses less digits than its factorization.

63438847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101168.

The product of its digits is 387072, while the sum is 43.

The square root of 63438847 is about 7964.8507205095. The cubic root of 63438847 is about 398.8274977041.

The spelling of 63438847 in words is "sixty-three million, four hundred thirty-eight thousand, eight hundred forty-seven".