3971536 has 20 divisors (see below), whose sum is σ = 7784100. Its totient is φ = 1962752.

The previous prime is 3971533. The next prime is 3971537. The reversal of 3971536 is 6351793.

3971536 = 154² + 155² + ... + 249².

3971536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1587600 + 2383936 = 1260^2 + 1544^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3971531) 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 3 ways as a sum of consecutive naturals, for example, 30 + ... + 2818.

It is an arithmetic number, because the mean of its divisors is an integer number (389205).

Almost surely, 2^3971536 is an apocalyptic number.

It is an amenable number.

3971536 is a deficient number, since it is larger than the sum of its proper divisors (3812564).

3971536 is a wasteful number, since it uses less digits than its factorization.

3971536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2886 (or 2880 counting only the distinct ones).

The product of its digits is 17010, while the sum is 34.

The square root of 3971536 is about 1992.8712953927. The cubic root of 3971536 is about 158.3626769868.

The spelling of 3971536 in words is "three million, nine hundred seventy-one thousand, five hundred thirty-six".