3986579 has 4 divisors (see below), whose sum is σ = 4042800. Its totient is φ = 3930360.

The previous prime is 3986539. The next prime is 3986581. The reversal of 3986579 is 9756893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9756893 = 41 ⋅237973.

It is a cyclic number.

It is not a de Polignac number, because 3986579 - 2²⁰ = 2938003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3986519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28004 + ... + 28145.

It is an arithmetic number, because the mean of its divisors is an integer number (1010700).

Almost surely, 2^3986579 is an apocalyptic number.

3986579 is a deficient number, since it is larger than the sum of its proper divisors (56221).

3986579 is an equidigital number, since it uses as much as digits as its factorization.

3986579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56220.

The product of its digits is 408240, while the sum is 47.

The square root of 3986579 is about 1996.6419308429. The cubic root of 3986579 is about 158.5623686856.

The spelling of 3986579 in words is "three million, nine hundred eighty-six thousand, five hundred seventy-nine".