63199944 has 48 divisors (see below), whose sum is σ = 172758300. Its totient is φ = 20870784.

The previous prime is 63199937. The next prime is 63199949. The reversal of 63199944 is 44999136.

63199944 is a `hidden beast` number, since 631 + 9 + 9 + 9 + 4 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 59444100 + 3755844 = 7710^2 + 1938^2 .

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 63199944.

It is not an unprimeable number, because it can be changed into a prime (63199949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3822 + ... + 11874.

Almost surely, 2^63199944 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 63199944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86379150).

63199944 is an abundant number, since it is smaller than the sum of its proper divisors (109558356).

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

63199944 is a wasteful number, since it uses less digits than its factorization.

63199944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8174 (or 8167 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 63199944 is about 7949.8392436577. The cubic root of 63199944 is about 398.3262226088.

The spelling of 63199944 in words is "sixty-three million, one hundred ninety-nine thousand, nine hundred forty-four".