3944287 has 4 divisors (see below), whose sum is σ = 4028256. Its totient is φ = 3860320.

The previous prime is 3944257. The next prime is 3944309. The reversal of 3944287 is 7824493.

It is a happy number.

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 3944287 - 2¹⁵ = 3911519 is a prime.

It is a Duffinian number.

3944287 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3944257) 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, 41914 + ... + 42007.

It is an arithmetic number, because the mean of its divisors is an integer number (1007064).

Almost surely, 2^3944287 is an apocalyptic number.

3944287 is a deficient number, since it is larger than the sum of its proper divisors (83969).

3944287 is an equidigital number, since it uses as much as digits as its factorization.

3944287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83968.

The product of its digits is 48384, while the sum is 37.

The square root of 3944287 is about 1986.0229102405. The cubic root of 3944287 is about 157.9996661853. Note that the first 3 decimals are identical.

The spelling of 3944287 in words is "three million, nine hundred forty-four thousand, two hundred eighty-seven".