3944857 has 4 divisors (see below), whose sum is σ = 4508416. Its totient is φ = 3381300.

The previous prime is 3944839. The next prime is 3944861. The reversal of 3944857 is 7584493.

3944857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3944857 - 2⁷ = 3944729 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3944807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281769 + ... + 281782.

It is an arithmetic number, because the mean of its divisors is an integer number (1127104).

Almost surely, 2^3944857 is an apocalyptic number.

It is an amenable number.

3944857 is a deficient number, since it is larger than the sum of its proper divisors (563559).

3944857 is an equidigital number, since it uses as much as digits as its factorization.

3944857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563558.

The product of its digits is 120960, while the sum is 40.

The square root of 3944857 is about 1986.1664079326. The cubic root of 3944857 is about 158.0072768106.

The spelling of 3944857 in words is "three million, nine hundred forty-four thousand, eight hundred fifty-seven".