63984438 has 128 divisors (see below), whose sum is σ = 175104000. Its totient is φ = 16912800.

The previous prime is 63984421. The next prime is 63984443. The reversal of 63984438 is 83448936.

63984438 is a `hidden beast` number, since 639 + 8 + 4 + 4 + 3 + 8 = 666.

63984438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 63984393 and 63984402.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 423663 + ... + 423813.

It is an arithmetic number, because the mean of its divisors is an integer number (1368000).

Almost surely, 2^63984438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63984438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87552000).

63984438 is an abundant number, since it is smaller than the sum of its proper divisors (111119562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63984438 is a wasteful number, since it uses less digits than its factorization.

63984438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 241 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 63984438 is about 7999.0273158678. The cubic root of 63984438 is about 399.9675765385.

The spelling of 63984438 in words is "sixty-three million, nine hundred eighty-four thousand, four hundred thirty-eight".