3999648311 has 16 divisors (see below), whose sum is σ = 4244258304. Its totient is φ = 3763990944.

The previous prime is 3999648299. The next prime is 3999648313. The reversal of 3999648311 is 1138469993.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3999648311 - 2¹⁰ = 3999647287 is a prime.

It is a super-2 number, since 2×3999648311² = 31994373223370305442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999648313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151670 + ... + 176076.

It is an arithmetic number, because the mean of its divisors is an integer number (265266144).

Almost surely, 2^3999648311 is an apocalyptic number.

3999648311 is a deficient number, since it is larger than the sum of its proper divisors (244609993).

3999648311 is a wasteful number, since it uses less digits than its factorization.

3999648311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24590.

The product of its digits is 1259712, while the sum is 53.

The square root of 3999648311 is about 63242.7727965813. The cubic root of 3999648311 is about 1587.3545279806.

The spelling of 3999648311 in words is "three billion, nine hundred ninety-nine million, six hundred forty-eight thousand, three hundred eleven".