3971534 has 16 divisors (see below), whose sum is σ = 7028736. Its totient is φ = 1647000.

The previous prime is 3971533. The next prime is 3971537. The reversal of 3971534 is 4351793.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3971534.

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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4142 + ... + 5009.

It is an arithmetic number, because the mean of its divisors is an integer number (439296).

Almost surely, 2^3971534 is an apocalyptic number.

3971534 is a deficient number, since it is larger than the sum of its proper divisors (3057202).

3971534 is a wasteful number, since it uses less digits than its factorization.

3971534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9191.

The product of its digits is 11340, while the sum is 32.

The square root of 3971534 is about 1992.8707936040. The cubic root of 3971534 is about 158.3626504039.

The spelling of 3971534 in words is "three million, nine hundred seventy-one thousand, five hundred thirty-four".