3921974 has 16 divisors (see below), whose sum is σ = 6749088. Its totient is φ = 1674432.

The previous prime is 3921971. The next prime is 3921991. The reversal of 3921974 is 4791293.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3921971) 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, 6092 + ... + 6704.

It is an arithmetic number, because the mean of its divisors is an integer number (421818).

Almost surely, 2^3921974 is an apocalyptic number.

3921974 is a deficient number, since it is larger than the sum of its proper divisors (2827114).

3921974 is a wasteful number, since it uses less digits than its factorization.

3921974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079.

The product of its digits is 13608, while the sum is 35.

The square root of 3921974 is about 1980.3974348600. The cubic root of 3921974 is about 157.7011656459.

It can be divided in two parts, 39219 and 74, that added together give a palindrome (39293).

The spelling of 3921974 in words is "three million, nine hundred twenty-one thousand, nine hundred seventy-four".