3974647 has 4 divisors (see below), whose sum is σ = 3980016. Its totient is φ = 3969280.

The previous prime is 3974623. The next prime is 3974657. The reversal of 3974647 is 7464793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7464793 = 7 ⋅1066399.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3974647 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3974657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1354 + ... + 3127.

It is an arithmetic number, because the mean of its divisors is an integer number (995004).

Almost surely, 2^3974647 is an apocalyptic number.

3974647 is a deficient number, since it is larger than the sum of its proper divisors (5369).

3974647 is an equidigital number, since it uses as much as digits as its factorization.

3974647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5368.

The product of its digits is 127008, while the sum is 40.

The square root of 3974647 is about 1993.6516746914. The cubic root of 3974647 is about 158.4040159637.

It can be divided in two parts, 39746 and 47, that added together give a palindrome (39793).

The spelling of 3974647 in words is "three million, nine hundred seventy-four thousand, six hundred forty-seven".