3986225 has 12 divisors (see below), whose sum is σ = 5064780. Its totient is φ = 3110400.

The previous prime is 3986209. The next prime is 3986231. The reversal of 3986225 is 5226893.

It can be written as a sum of positive squares in 6 ways, for example, as 364816 + 3621409 = 604^2 + 1903^2 .

It is not a de Polignac number, because 3986225 - 2⁴ = 3986209 is a prime.

It is a d-powerful number, because it can be written as 3⁵ + 9 + 8 + 6⁸ + 2¹⁷ + 2²¹ + 5⁷ .

It is a Curzon 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, 920 + ... + 2969.

It is an arithmetic number, because the mean of its divisors is an integer number (422065).

Almost surely, 2^3986225 is an apocalyptic number.

It is an amenable number.

3986225 is a deficient number, since it is larger than the sum of its proper divisors (1078555).

3986225 is a wasteful number, since it uses less digits than its factorization.

3986225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3940 (or 3935 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 3986225 is about 1996.5532800304. The cubic root of 3986225 is about 158.5576752094.

The spelling of 3986225 in words is "three million, nine hundred eighty-six thousand, two hundred twenty-five".