63944004 has 48 divisors (see below), whose sum is σ = 158554368. Its totient is φ = 19987968.

The previous prime is 63943993. The next prime is 63944011. The reversal of 63944004 is 40044936.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94114 + ... + 94790.

It is an arithmetic number, because the mean of its divisors is an integer number (3303216).

Almost surely, 2^63944004 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 63944004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79277184).

63944004 is an abundant number, since it is smaller than the sum of its proper divisors (94610364).

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

63944004 is a wasteful number, since it uses less digits than its factorization.

63944004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164 (or 1162 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 63944004 is about 7996.4994841493. The cubic root of 63944004 is about 399.8833076272.

The spelling of 63944004 in words is "sixty-three million, nine hundred forty-four thousand, four".