3999803536 has 45 divisors (see below), whose sum is σ = 7878669561. Its totient is φ = 1967141376.

The previous prime is 3999803519. The next prime is 3999803543. The reversal of 3999803536 is 6353089993.

The square root of 3999803536 is 63244.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1796064400 + 2203739136 = 42380^2 + 46944^2 .

It is a Duffinian 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 8 ways as a sum of consecutive naturals, for example, 24538591 + ... + 24538753.

Almost surely, 2^3999803536 is an apocalyptic number.

3999803536 is the 63244-th square number.

It is an amenable number.

3999803536 is a deficient number, since it is larger than the sum of its proper divisors (3878866025).

3999803536 is an frugal number, since it uses more digits than its factorization.

3999803536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 4723920, while the sum is 55.

The cubic root of 3999803536 is about 1587.3750626127.

The spelling of 3999803536 in words is "three billion, nine hundred ninety-nine million, eight hundred three thousand, five hundred thirty-six".