3994543 has 4 divisors (see below), whose sum is σ = 4565200. Its totient is φ = 3423888.

The previous prime is 3994537. The next prime is 3994553. The reversal of 3994543 is 3454993.

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 3994543 - 2¹³ = 3986351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3994513) 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, 285318 + ... + 285331.

It is an arithmetic number, because the mean of its divisors is an integer number (1141300).

Almost surely, 2^3994543 is an apocalyptic number.

3994543 is a deficient number, since it is larger than the sum of its proper divisors (570657).

3994543 is an equidigital number, since it uses as much as digits as its factorization.

3994543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570656.

The product of its digits is 58320, while the sum is 37.

The square root of 3994543 is about 1998.6352843878. The cubic root of 3994543 is about 158.6678852820.

The spelling of 3994543 in words is "three million, nine hundred ninety-four thousand, five hundred forty-three".