3940447 has 8 divisors (see below), whose sum is σ = 4768416. Its totient is φ = 3178752.

The previous prime is 3940439. The next prime is 3940451. The reversal of 3940447 is 7440493.

3940447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3940447 - 2³ = 3940439 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 (3940427) 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 7 ways as a sum of consecutive naturals, for example, 16438 + ... + 16675.

It is an arithmetic number, because the mean of its divisors is an integer number (596052).

Almost surely, 2^3940447 is an apocalyptic number.

3940447 is a deficient number, since it is larger than the sum of its proper divisors (827969).

3940447 is a wasteful number, since it uses less digits than its factorization.

3940447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33137.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 3940447 is about 1985.0559186078. The cubic root of 3940447 is about 157.9483754858.

The spelling of 3940447 in words is "three million, nine hundred forty thousand, four hundred forty-seven".