3994571 has 16 divisors (see below), whose sum is σ = 4882944. Its totient is φ = 3193344.

The previous prime is 3994561. The next prime is 3994591. The reversal of 3994571 is 1754993.

It is a happy number.

It is not a de Polignac number, because 3994571 - 2¹⁰ = 3993547 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3994561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6635 + ... + 7211.

It is an arithmetic number, because the mean of its divisors is an integer number (305184).

Almost surely, 2^3994571 is an apocalyptic number.

3994571 is a deficient number, since it is larger than the sum of its proper divisors (888373).

3994571 is a wasteful number, since it uses less digits than its factorization.

3994571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650.

The product of its digits is 34020, while the sum is 38.

The square root of 3994571 is about 1998.6422891553. The cubic root of 3994571 is about 158.6682560120.

The spelling of 3994571 in words is "three million, nine hundred ninety-four thousand, five hundred seventy-one".