3971693 has 16 divisors (see below), whose sum is σ = 4670784. Its totient is φ = 3336960.

The previous prime is 3971687. The next prime is 3971713. The reversal of 3971693 is 3961793.

It is not a de Polignac number, because 3971693 - 2⁴ = 3971677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3971393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12371 + ... + 12687.

It is an arithmetic number, because the mean of its divisors is an integer number (291924).

Almost surely, 2^3971693 is an apocalyptic number.

It is an amenable number.

3971693 is a deficient number, since it is larger than the sum of its proper divisors (699091).

3971693 is a wasteful number, since it uses less digits than its factorization.

3971693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412.

The product of its digits is 30618, while the sum is 38.

The square root of 3971693 is about 1992.9106854046. The cubic root of 3971693 is about 158.3647637204.

It can be divided in two parts, 3971 and 693, that added together give a palindrome (4664).

The spelling of 3971693 in words is "three million, nine hundred seventy-one thousand, six hundred ninety-three".