3947974 has 16 divisors (see below), whose sum is σ = 6281856. Its totient is φ = 1857600.

The previous prime is 3947971. The next prime is 3947987. The reversal of 3947974 is 4797493.

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 3947974.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3947971) 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, 1434 + ... + 3154.

It is an arithmetic number, because the mean of its divisors is an integer number (392616).

Almost surely, 2^3947974 is an apocalyptic number.

3947974 is a deficient number, since it is larger than the sum of its proper divisors (2333882).

3947974 is a wasteful number, since it uses less digits than its factorization.

3947974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791.

The product of its digits is 190512, while the sum is 43.

The square root of 3947974 is about 1986.9509304459. The cubic root of 3947974 is about 158.0488819538.

The spelling of 3947974 in words is "three million, nine hundred forty-seven thousand, nine hundred seventy-four".