3971087205 has 16 divisors (see below), whose sum is σ = 6727489344. Its totient is φ = 1993329920.

The previous prime is 3971087203. The next prime is 3971087209. The reversal of 3971087205 is 5027801793.

It is not a de Polignac number, because 3971087205 - 2¹ = 3971087203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3971087201) 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, 7786191 + ... + 7786700.

It is an arithmetic number, because the mean of its divisors is an integer number (420468084).

Almost surely, 2^3971087205 is an apocalyptic number.

It is an amenable number.

3971087205 is a deficient number, since it is larger than the sum of its proper divisors (2756402139).

3971087205 is a wasteful number, since it uses less digits than its factorization.

3971087205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15572916.

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 3971087205 is about 63016.5629418171. The cubic root of 3971087205 is about 1583.5671161599.

Adding to 3971087205 its reverse (5027801793), we get a palindrome (8998888998).

The spelling of 3971087205 in words is "three billion, nine hundred seventy-one million, eighty-seven thousand, two hundred five".