3984925 has 18 divisors (see below), whose sum is σ = 5749818. Its totient is φ = 2731680.

The previous prime is 3984917. The next prime is 3984941. The reversal of 3984925 is 5294893.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1301881 + 2683044 = 1141^2 + 1638^2 .

It is not a de Polignac number, because 3984925 - 2³ = 3984917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 402 + ... + 2851.

Almost surely, 2^3984925 is an apocalyptic number.

3984925 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3984925 is a deficient number, since it is larger than the sum of its proper divisors (1764893).

3984925 is a wasteful number, since it uses less digits than its factorization.

3984925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277 (or 3265 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 3984925 is about 1996.2276924239. The cubic root of 3984925 is about 158.5404368959.

The spelling of 3984925 in words is "three million, nine hundred eighty-four thousand, nine hundred twenty-five".