63944412 has 72 divisors (see below), whose sum is σ = 183801744. Its totient is φ = 17192448.

The previous prime is 63944401. The next prime is 63944431. The reversal of 63944412 is 21444936.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6798 + ... + 13194.

It is an arithmetic number, because the mean of its divisors is an integer number (2552802).

Almost surely, 2^63944412 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 63944412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91900872).

63944412 is an abundant number, since it is smaller than the sum of its proper divisors (119857332).

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

63944412 is a wasteful number, since it uses less digits than its factorization.

63944412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6435 (or 6426 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The square root of 63944412 is about 7996.5249952714. The cubic root of 63944412 is about 399.8841581216.

The spelling of 63944412 in words is "sixty-three million, nine hundred forty-four thousand, four hundred twelve".