3999010001 has 12 divisors (see below), whose sum is σ = 4728173940. Its totient is φ = 3371528160.

The previous prime is 3999009991. The next prime is 3999010021. The reversal of 3999010001 is 1000109993.

3999010001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1506604225 + 2492405776 = 38815^2 + 49924^2 .

It is not a de Polignac number, because 3999010001 - 2¹⁴ = 3998993617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3999010001.

It is not an unprimeable number, because it can be changed into a prime (3999010021) 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, 665966 + ... + 671943.

It is an arithmetic number, because the mean of its divisors is an integer number (394014495).

Almost surely, 2^3999010001 is an apocalyptic number.

It is an amenable number.

3999010001 is a deficient number, since it is larger than the sum of its proper divisors (729163939).

3999010001 is a wasteful number, since it uses less digits than its factorization.

3999010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337984 (or 1337977 counting only the distinct ones).

The product of its (nonzero) digits is 2187, while the sum is 32.

The square root of 3999010001 is about 63237.7260897322. The cubic root of 3999010001 is about 1587.2700807080.

Adding to 3999010001 its reverse (1000109993), we get a palindrome (4999119994).

The spelling of 3999010001 in words is "three billion, nine hundred ninety-nine million, ten thousand, one".