3944559 has 4 divisors (see below), whose sum is σ = 5259416. Its totient is φ = 2629704.

The previous prime is 3944557. The next prime is 3944581. The reversal of 3944559 is 9554493.

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

It is not a de Polignac number, because 3944559 - 2¹ = 3944557 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 (3944557) 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, 657424 + ... + 657429.

It is an arithmetic number, because the mean of its divisors is an integer number (1314854).

Almost surely, 2^3944559 is an apocalyptic number.

3944559 is a deficient number, since it is larger than the sum of its proper divisors (1314857).

3944559 is a wasteful number, since it uses less digits than its factorization.

3944559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314856.

The product of its digits is 97200, while the sum is 39.

The square root of 3944559 is about 1986.0913876255. The cubic root of 3944559 is about 158.0032980137.

The spelling of 3944559 in words is "three million, nine hundred forty-four thousand, five hundred fifty-nine".