3964287 has 4 divisors (see below), whose sum is σ = 5285720. Its totient is φ = 2642856.

The previous prime is 3964283. The next prime is 3964297. The reversal of 3964287 is 7824693.

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

It is not a de Polignac number, because 3964287 - 2² = 3964283 is a prime.

It is a D-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 (3964283) 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, 660712 + ... + 660717.

It is an arithmetic number, because the mean of its divisors is an integer number (1321430).

Almost surely, 2^3964287 is an apocalyptic number.

3964287 is a deficient number, since it is larger than the sum of its proper divisors (1321433).

3964287 is a wasteful number, since it uses less digits than its factorization.

3964287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321432.

The product of its digits is 72576, while the sum is 39.

The square root of 3964287 is about 1991.0517321255. The cubic root of 3964287 is about 158.2662684273.

The spelling of 3964287 in words is "three million, nine hundred sixty-four thousand, two hundred eighty-seven".