3974689844 has 12 divisors (see below), whose sum is σ = 7086947364. Its totient is φ = 1949847744.

The previous prime is 3974689841. The next prime is 3974689853. The reversal of 3974689844 is 4489864793.

It can be written as a sum of positive squares in 2 ways, for example, as 3234196900 + 740492944 = 56870^2 + 27212^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3974689841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9374057 + ... + 9374480.

It is an arithmetic number, because the mean of its divisors is an integer number (590578947).

Almost surely, 2^3974689844 is an apocalyptic number.

It is an amenable number.

3974689844 is a deficient number, since it is larger than the sum of its proper divisors (3112257520).

3974689844 is a wasteful number, since it uses less digits than its factorization.

3974689844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18748594 (or 18748592 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 62.

The square root of 3974689844 is about 63045.1413195339. The cubic root of 3974689844 is about 1584.0458512431.

The spelling of 3974689844 in words is "three billion, nine hundred seventy-four million, six hundred eighty-nine thousand, eight hundred forty-four".