3903925 has 6 divisors (see below), whose sum is σ = 4840898. Its totient is φ = 3123120.

The previous prime is 3903917. The next prime is 3903929. The reversal of 3903925 is 5293093.

It can be written as a sum of positive squares in 3 ways, for example, as 252004 + 3651921 = 502^2 + 1911^2 .

It is not a de Polignac number, because 3903925 - 2³ = 3903917 is a prime.

It is a Duffinian number.

3903925 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3903929) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 78054 + ... + 78103.

Almost surely, 2^3903925 is an apocalyptic number.

It is an amenable number.

3903925 is a deficient number, since it is larger than the sum of its proper divisors (936973).

3903925 is a wasteful number, since it uses less digits than its factorization.

3903925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156167 (or 156162 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 31.

The square root of 3903925 is about 1975.8352664127. The cubic root of 3903925 is about 157.4588789936.

The spelling of 3903925 in words is "three million, nine hundred three thousand, nine hundred twenty-five".