3989578 has 16 divisors (see below), whose sum is σ = 6128640. Its totient is φ = 1947456.

The previous prime is 3989569. The next prime is 3989593. The reversal of 3989578 is 8759893.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28633 + ... + 28771.

It is an arithmetic number, because the mean of its divisors is an integer number (383040).

Almost surely, 2^3989578 is an apocalyptic number.

3989578 is a deficient number, since it is larger than the sum of its proper divisors (2139062).

3989578 is a wasteful number, since it uses less digits than its factorization.

3989578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381.

The product of its digits is 544320, while the sum is 49.

The square root of 3989578 is about 1997.3928006279. The cubic root of 3989578 is about 158.6021195054.

The spelling of 3989578 in words is "three million, nine hundred eighty-nine thousand, five hundred seventy-eight".