3943220 has 12 divisors (see below), whose sum is σ = 8280804. Its totient is φ = 1577280.

The previous prime is 3943211. The next prime is 3943243. The reversal of 3943220 is 223493.

3943220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3118756 + 824464 = 1766^2 + 908^2 .

It is a congruent number.

It is an unprimeable number.

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, 98561 + ... + 98600.

It is an arithmetic number, because the mean of its divisors is an integer number (690067).

Almost surely, 2^3943220 is an apocalyptic number.

It is an amenable number.

3943220 is an abundant number, since it is smaller than the sum of its proper divisors (4337584).

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

3943220 is a wasteful number, since it uses less digits than its factorization.

3943220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197170 (or 197168 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 3943220 is about 1985.7542647568. The cubic root of 3943220 is about 157.9854176576.

The spelling of 3943220 in words is "three million, nine hundred forty-three thousand, two hundred twenty".