3971634 has 8 divisors (see below), whose sum is σ = 7943280. Its totient is φ = 1323876.

The previous prime is 3971621. The next prime is 3971651. The reversal of 3971634 is 4361793.

3971634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

3971634 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 3971595 and 3971604.

It is an unprimeable number.

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, 330964 + ... + 330975.

It is an arithmetic number, because the mean of its divisors is an integer number (992910).

Almost surely, 2^3971634 is an apocalyptic number.

3971634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3971634 is a wasteful number, since it uses less digits than its factorization.

3971634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661944.

The product of its digits is 13608, while the sum is 33.

The square root of 3971634 is about 1992.8958828800. The cubic root of 3971634 is about 158.3639795403.

The spelling of 3971634 in words is "three million, nine hundred seventy-one thousand, six hundred thirty-four".