3996047 has 4 divisors (see below), whose sum is σ = 4359336. Its totient is φ = 3632760.

The previous prime is 3996017. The next prime is 3996059. The reversal of 3996047 is 7406993.

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 3996047 - 2⁸ = 3995791 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 3996047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3996007) 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, 181628 + ... + 181649.

It is an arithmetic number, because the mean of its divisors is an integer number (1089834).

Almost surely, 2^3996047 is an apocalyptic number.

3996047 is a deficient number, since it is larger than the sum of its proper divisors (363289).

3996047 is a wasteful number, since it uses less digits than its factorization.

3996047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363288.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 3996047 is about 1999.0115057198. The cubic root of 3996047 is about 158.6877963253.

It can be divided in two parts, 399 and 6047, that added together give a palindrome (6446).

The spelling of 3996047 in words is "three million, nine hundred ninety-six thousand, forty-seven".