3988641899 has 16 divisors (see below), whose sum is σ = 4779406080. Its totient is φ = 3285833760.

The previous prime is 3988641871. The next prime is 3988641901. The reversal of 3988641899 is 9981468893.

It is not a de Polignac number, because 3988641899 - 2²⁸ = 3720206443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3988641869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 410072 + ... + 419685.

It is an arithmetic number, because the mean of its divisors is an integer number (298712880).

Almost surely, 2^3988641899 is an apocalyptic number.

3988641899 is a deficient number, since it is larger than the sum of its proper divisors (790764181).

3988641899 is a wasteful number, since it uses less digits than its factorization.

3988641899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829810.

The product of its digits is 26873856, while the sum is 65.

The square root of 3988641899 is about 63155.6956972212. The cubic root of 3988641899 is about 1585.8971391462.

The spelling of 3988641899 in words is "three billion, nine hundred eighty-eight million, six hundred forty-one thousand, eight hundred ninety-nine".