63989244 has 96 divisors (see below), whose sum is σ = 184154880. Its totient is φ = 19051200.

The previous prime is 63989209. The next prime is 63989249. The reversal of 63989244 is 44298936.

63989244 is a `hidden beast` number, since 639 + 8 + 9 + 2 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 63989244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63989249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72027 + ... + 72909.

It is an arithmetic number, because the mean of its divisors is an integer number (1918280).

Almost surely, 2^63989244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63989244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92077440).

63989244 is an abundant number, since it is smaller than the sum of its proper divisors (120165636).

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

63989244 is a wasteful number, since it uses less digits than its factorization.

63989244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968 (or 960 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 63989244 is about 7999.3277217526. The cubic root of 63989244 is about 399.9775904112.

It can be divided in two parts, 639892 and 44, that added together give a palindrome (639936).

The spelling of 63989244 in words is "sixty-three million, nine hundred eighty-nine thousand, two hundred forty-four".