3964225 has 12 divisors (see below), whose sum is σ = 4942764. Its totient is φ = 3153920.

The previous prime is 3964201. The next prime is 3964229. The reversal of 3964225 is 5224693.

It can be written as a sum of positive squares in 6 ways, for example, as 55696 + 3908529 = 236^2 + 1977^2 .

It is not a de Polignac number, because 3964225 - 2⁵ = 3964193 is a prime.

It is a d-powerful number, because it can be written as 3¹¹ + 9⁶ + 6⁸ + 4¹⁰ + 2⁵ + 2¹⁹ + 5⁵ .

It is a Duffinian number.

3964225 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3964229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6117 + ... + 6733.

It is an arithmetic number, because the mean of its divisors is an integer number (411897).

Almost surely, 2^3964225 is an apocalyptic number.

It is an amenable number.

3964225 is a deficient number, since it is larger than the sum of its proper divisors (978539).

3964225 is a wasteful number, since it uses less digits than its factorization.

3964225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884 (or 879 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 3964225 is about 1991.0361624039. The cubic root of 3964225 is about 158.2654433474.

The spelling of 3964225 in words is "three million, nine hundred sixty-four thousand, two hundred twenty-five".