3974890 has 8 divisors (see below), whose sum is σ = 7154820. Its totient is φ = 1589952.

The previous prime is 3974881. The next prime is 3974897. The reversal of 3974890 is 984793.

It can be written as a sum of positive squares in 2 ways, for example, as 3956121 + 18769 = 1989^2 + 137^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (3974897) 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 3 ways as a sum of consecutive naturals, for example, 198735 + ... + 198754.

Almost surely, 2^3974890 is an apocalyptic number.

3974890 is a deficient number, since it is larger than the sum of its proper divisors (3179930).

3974890 is a wasteful number, since it uses less digits than its factorization.

3974890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397496.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 3974890 is about 1993.7126172044. The cubic root of 3974890 is about 158.4072440400.

The spelling of 3974890 in words is "three million, nine hundred seventy-four thousand, eight hundred ninety".