3996143 has 4 divisors (see below), whose sum is σ = 4020240. Its totient is φ = 3972048.

The previous prime is 3996131. The next prime is 3996149. The reversal of 3996143 is 3416993.

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 3996143 - 2⁶ = 3996079 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 (3996149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11798 + ... + 12131.

It is an arithmetic number, because the mean of its divisors is an integer number (1005060).

Almost surely, 2^3996143 is an apocalyptic number.

3996143 is a deficient number, since it is larger than the sum of its proper divisors (24097).

3996143 is a wasteful number, since it uses less digits than its factorization.

3996143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24096.

The product of its digits is 17496, while the sum is 35.

The square root of 3996143 is about 1999.0355174433. The cubic root of 3996143 is about 158.6890670733.

It can be divided in two parts, 39961 and 43, that added together give a palindrome (40004).

The spelling of 3996143 in words is "three million, nine hundred ninety-six thousand, one hundred forty-three".