3971087208 has 160 divisors (see below), whose sum is σ = 12218580000. Its totient is φ = 1194963840.

The previous prime is 3971087203. The next prime is 3971087209. The reversal of 3971087208 is 8027801793.

It is a super-2 number, since 2×3971087208² = 31539067227082470528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3971087201) 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 39 ways as a sum of consecutive naturals, for example, 1060203 + ... + 1063941.

It is an arithmetic number, because the mean of its divisors is an integer number (76366125).

Almost surely, 2^3971087208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3971087208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6109290000).

3971087208 is an abundant number, since it is smaller than the sum of its proper divisors (8247492792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3971087208 is a wasteful number, since it uses less digits than its factorization.

3971087208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3917 (or 3904 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 3971087208 is about 63016.5629656204. The cubic root of 3971087208 is about 1583.5671165587.

The spelling of 3971087208 in words is "three billion, nine hundred seventy-one million, eighty-seven thousand, two hundred eight".