3943506 has 16 divisors (see below), whose sum is σ = 9013824. Its totient is φ = 1126704.

The previous prime is 3943481. The next prime is 3943517. The reversal of 3943506 is 6053493.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46905 + ... + 46988.

It is an arithmetic number, because the mean of its divisors is an integer number (563364).

Almost surely, 2^3943506 is an apocalyptic number.

3943506 is an abundant number, since it is smaller than the sum of its proper divisors (5070318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3943506 is a wasteful number, since it uses less digits than its factorization.

3943506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93905.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 3943506 is about 1985.8262763898. The cubic root of 3943506 is about 157.9892371027.

Adding to 3943506 its reverse (6053493), we get a palindrome (9996999).

The spelling of 3943506 in words is "three million, nine hundred forty-three thousand, five hundred six".