3988109811 has 32 divisors (see below), whose sum is σ = 6241406976. Its totient is φ = 2217600000.

The previous prime is 3988109683. The next prime is 3988109813. The reversal of 3988109811 is 1189018893.

It is not a de Polignac number, because 3988109811 - 2⁷ = 3988109683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3988109813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 339486 + ... + 351036.

It is an arithmetic number, because the mean of its divisors is an integer number (195043968).

Almost surely, 2^3988109811 is an apocalyptic number.

3988109811 is a deficient number, since it is larger than the sum of its proper divisors (2253297165).

3988109811 is a wasteful number, since it uses less digits than its factorization.

3988109811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12003.

The product of its (nonzero) digits is 124416, while the sum is 48.

The square root of 3988109811 is about 63151.4830467187. The cubic root of 3988109811 is about 1585.8266160305.

The spelling of 3988109811 in words is "three billion, nine hundred eighty-eight million, one hundred nine thousand, eight hundred eleven".