3944205 has 12 divisors (see below), whose sum is σ = 6836700. Its totient is φ = 2103552.

The previous prime is 3944189. The next prime is 3944219. The reversal of 3944205 is 5024493.

It can be written as a sum of positive squares in 2 ways, for example, as 1425636 + 2518569 = 1194^2 + 1587^2 .

It is not a de Polignac number, because 3944205 - 2⁴ = 3944189 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43780 + ... + 43869.

It is an arithmetic number, because the mean of its divisors is an integer number (569725).

Almost surely, 2^3944205 is an apocalyptic number.

It is an amenable number.

3944205 is a deficient number, since it is larger than the sum of its proper divisors (2892495).

3944205 is a wasteful number, since it uses less digits than its factorization.

3944205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87660 (or 87657 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 3944205 is about 1986.0022658597. The cubic root of 3944205 is about 157.9985712631.

Adding to 3944205 its reverse (5024493), we get a palindrome (8968698).

It can be divided in two parts, 39 and 44205, that added together give a palindrome (44244).

The spelling of 3944205 in words is "three million, nine hundred forty-four thousand, two hundred five".