3984571 has 4 divisors (see below), whose sum is σ = 4122000. Its totient is φ = 3847144.

The previous prime is 3984521. The next prime is 3984587. The reversal of 3984571 is 1754893.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3984571 - 2²¹ = 1887419 is a prime.

It is a Duffinian number.

3984571 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3984571.

It is not an unprimeable number, because it can be changed into a prime (3984521) 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, 68671 + ... + 68728.

It is an arithmetic number, because the mean of its divisors is an integer number (1030500).

Almost surely, 2^3984571 is an apocalyptic number.

3984571 is a deficient number, since it is larger than the sum of its proper divisors (137429).

3984571 is a wasteful number, since it uses less digits than its factorization.

3984571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137428.

The product of its digits is 30240, while the sum is 37.

The square root of 3984571 is about 1996.1390232146. The cubic root of 3984571 is about 158.5357421211.

The spelling of 3984571 in words is "three million, nine hundred eighty-four thousand, five hundred seventy-one".