3944239 has 8 divisors (see below), whose sum is σ = 4282880. Its totient is φ = 3610656.

The previous prime is 3944231. The next prime is 3944249. The reversal of 3944239 is 9324493.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3944239 - 2³ = 3944231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3944231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457 + ... + 2845.

It is an arithmetic number, because the mean of its divisors is an integer number (535360).

Almost surely, 2^3944239 is an apocalyptic number.

3944239 is a deficient number, since it is larger than the sum of its proper divisors (338641).

3944239 is a wasteful number, since it uses less digits than its factorization.

3944239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2529.

The product of its digits is 23328, while the sum is 34.

The square root of 3944239 is about 1986.0108257510. The cubic root of 3944239 is about 157.9990252570. Note that the first 3 decimals are identical.

The spelling of 3944239 in words is "three million, nine hundred forty-four thousand, two hundred thirty-nine".