3984371668 has 24 divisors (see below), whose sum is σ = 7771377600. Its totient is φ = 1776313728.

The previous prime is 3984371663. The next prime is 3984371707. The reversal of 3984371668 is 8661734893.

It is a happy number.

It is a super-2 number, since 2×3984371668² = 31750435177522204448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3984371663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1540648 + ... + 1543231.

It is an arithmetic number, because the mean of its divisors is an integer number (323807400).

Almost surely, 2^3984371668 is an apocalyptic number.

3984371668 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

3984371668 is a deficient number, since it is larger than the sum of its proper divisors (3787005932).

3984371668 is a wasteful number, since it uses less digits than its factorization.

3984371668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3083919 (or 3083917 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 55.

The square root of 3984371668 is about 63121.8794713846. The cubic root of 3984371668 is about 1585.3309844262.

The spelling of 3984371668 in words is "three billion, nine hundred eighty-four million, three hundred seventy-one thousand, six hundred sixty-eight".