3971718 has 24 divisors (see below), whose sum is σ = 8651448. Its totient is φ = 1316832.

The previous prime is 3971713. The next prime is 3971719. The reversal of 3971718 is 8171793.

3971718 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3971713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3721 + ... + 4667.

It is an arithmetic number, because the mean of its divisors is an integer number (360477).

Almost surely, 2^3971718 is an apocalyptic number.

3971718 is an abundant number, since it is smaller than the sum of its proper divisors (4679730).

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

3971718 is a wasteful number, since it uses less digits than its factorization.

3971718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188 (or 1185 counting only the distinct ones).

The product of its digits is 10584, while the sum is 36.

The square root of 3971718 is about 1992.9169576277. The cubic root of 3971718 is about 158.3650959977.

The spelling of 3971718 in words is "three million, nine hundred seventy-one thousand, seven hundred eighteen".