3973647 has 8 divisors (see below), whose sum is σ = 5316480. Its totient is φ = 2639960.

The previous prime is 3973639. The next prime is 3973649. The reversal of 3973647 is 7463793.

3973647 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.

It is a cyclic number.

It is not a de Polignac number, because 3973647 - 2³ = 3973639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3973649) 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 7 ways as a sum of consecutive naturals, for example, 1197 + ... + 3062.

It is an arithmetic number, because the mean of its divisors is an integer number (664560).

Almost surely, 2^3973647 is an apocalyptic number.

3973647 is a deficient number, since it is larger than the sum of its proper divisors (1342833).

3973647 is a wasteful number, since it uses less digits than its factorization.

3973647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4573.

The product of its digits is 95256, while the sum is 39.

The square root of 3973647 is about 1993.4008628472. The cubic root of 3973647 is about 158.3907303141.

The spelling of 3973647 in words is "three million, nine hundred seventy-three thousand, six hundred forty-seven".