3981925 has 24 divisors (see below), whose sum is σ = 5312160. Its totient is φ = 2952000.

The previous prime is 3981917. The next prime is 3981937. The reversal of 3981925 is 5291893.

3981925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3981925 - 2³ = 3981917 is a prime.

3981925 is a lucky number.

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 23 ways as a sum of consecutive naturals, for example, 39375 + ... + 39475.

It is an arithmetic number, because the mean of its divisors is an integer number (221340).

Almost surely, 2^3981925 is an apocalyptic number.

It is an amenable number.

3981925 is a deficient number, since it is larger than the sum of its proper divisors (1330235).

3981925 is a wasteful number, since it uses less digits than its factorization.

3981925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 208 counting only the distinct ones).

The product of its digits is 19440, while the sum is 37.

The square root of 3981925 is about 1995.4761336583. The cubic root of 3981925 is about 158.5006418587.

The spelling of 3981925 in words is "three million, nine hundred eighty-one thousand, nine hundred twenty-five".